20476615755 has 16 divisors (see below), whose sum is σ = 32774860800. Its totient is φ = 10916769888.

The previous prime is 20476615741. The next prime is 20476615759. The reversal of 20476615755 is 55751667402.

It is not a de Polignac number, because 20476615755 - 2⁸ = 20476615499 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20476615759) 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 15 ways as a sum of consecutive naturals, for example, 214155 + ... + 294644.

It is an arithmetic number, because the mean of its divisors is an integer number (2048428800).

Almost surely, 2^20476615755 is an apocalyptic number.

20476615755 is a deficient number, since it is larger than the sum of its proper divisors (12298245045).

20476615755 is a wasteful number, since it uses less digits than its factorization.

20476615755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 511490.

The product of its (nonzero) digits is 1764000, while the sum is 48.

The spelling of 20476615755 in words is "twenty billion, four hundred seventy-six million, six hundred fifteen thousand, seven hundred fifty-five".