2640164547 has 16 divisors (see below), whose sum is σ = 3575940480. Its totient is φ = 1732296192.

The previous prime is 2640164521. The next prime is 2640164567. The reversal of 2640164547 is 7454610462.

It is not a de Polignac number, because 2640164547 - 2¹⁵ = 2640131779 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2640164567) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 247843 + ... + 258275.

It is an arithmetic number, because the mean of its divisors is an integer number (223496280).

Almost surely, 2^2640164547 is an apocalyptic number.

2640164547 is a deficient number, since it is larger than the sum of its proper divisors (935775933).

2640164547 is a wasteful number, since it uses less digits than its factorization.

2640164547 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11762.

The product of its (nonzero) digits is 161280, while the sum is 39.

The square root of 2640164547 is about 51382.5315355326. The cubic root of 2640164547 is about 1382.1133597848.

The spelling of 2640164547 in words is "two billion, six hundred forty million, one hundred sixty-four thousand, five hundred forty-seven".