20580352155 has 96 divisors (see below), whose sum is σ = 40295169600. Its totient is φ = 9958671360.

The previous prime is 20580352123. The next prime is 20580352171. The reversal of 20580352155 is 55125308502.

20580352155 is a `hidden beast` number, since 2 + 0 + 5 + 80 + 3 + 521 + 55 = 666.

It is not a de Polignac number, because 20580352155 - 2⁵ = 20580352123 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 11580627 + ... + 11582403.

It is an arithmetic number, because the mean of its divisors is an integer number (419741350).

Almost surely, 2^20580352155 is an apocalyptic number.

20580352155 is a deficient number, since it is larger than the sum of its proper divisors (19714817445).

20580352155 is a wasteful number, since it uses less digits than its factorization.

20580352155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2522 (or 2505 counting only the distinct ones).

The product of its (nonzero) digits is 60000, while the sum is 36.

The spelling of 20580352155 in words is "twenty billion, five hundred eighty million, three hundred fifty-two thousand, one hundred fifty-five".