2135261456 has 40 divisors (see below), whose sum is σ = 4226615640. Its totient is φ = 1044632576.

The previous prime is 2135261437. The next prime is 2135261459. The reversal of 2135261456 is 6541625312.

It can be written as a sum of positive squares in 4 ways, for example, as 81721600 + 2053539856 = 9040^2 + 45316^2 .

It is not an unprimeable number, because it can be changed into a prime (2135261459) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 326636 + ... + 333108.

It is an arithmetic number, because the mean of its divisors is an integer number (105665391).

Almost surely, 2^2135261456 is an apocalyptic number.

It is an amenable number.

2135261456 is a deficient number, since it is larger than the sum of its proper divisors (2091354184).

2135261456 is a wasteful number, since it uses less digits than its factorization.

2135261456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6923 (or 6917 counting only the distinct ones).

The product of its digits is 43200, while the sum is 35.

The square root of 2135261456 is about 46208.8893612474. The cubic root of 2135261456 is about 1287.7068922681.

Adding to 2135261456 its reverse (6541625312), we get a palindrome (8676886768).

The spelling of 2135261456 in words is "two billion, one hundred thirty-five million, two hundred sixty-one thousand, four hundred fifty-six".