2156016455 has 16 divisors (see below), whose sum is σ = 2748777120. Its totient is φ = 1620323712.

The previous prime is 2156016419. The next prime is 2156016461. The reversal of 2156016455 is 5546106512.

It is a cyclic number.

It is not a de Polignac number, because 2156016455 - 2¹⁰ = 2156015431 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 195569 + ... + 206298.

It is an arithmetic number, because the mean of its divisors is an integer number (171798570).

Almost surely, 2^2156016455 is an apocalyptic number.

2156016455 is a deficient number, since it is larger than the sum of its proper divisors (592760665).

2156016455 is a wasteful number, since it uses less digits than its factorization.

2156016455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 401938.

The product of its (nonzero) digits is 36000, while the sum is 35.

The square root of 2156016455 is about 46432.9242563938. The cubic root of 2156016455 is about 1291.8656687539.

The spelling of 2156016455 in words is "two billion, one hundred fifty-six million, sixteen thousand, four hundred fifty-five".