20152056507 has 32 divisors (see below), whose sum is σ = 30972395520. Its totient is φ = 11526469920.

The previous prime is 20152056497. The next prime is 20152056527. The reversal of 20152056507 is 70565025102.

It is not a de Polignac number, because 20152056507 - 2⁸ = 20152056251 is a prime.

It is a super-2 number, since 2×20152056507² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (20152056527) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 103798 + ... + 226004.

It is an arithmetic number, because the mean of its divisors is an integer number (967887360).

Almost surely, 2^20152056507 is an apocalyptic number.

20152056507 is a deficient number, since it is larger than the sum of its proper divisors (10820339013).

20152056507 is a wasteful number, since it uses less digits than its factorization.

20152056507 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122503.

The product of its (nonzero) digits is 21000, while the sum is 33.

The spelling of 20152056507 in words is "twenty billion, one hundred fifty-two million, fifty-six thousand, five hundred seven".