20115511053 has 12 divisors (see below), whose sum is σ = 29480584224. Its totient is φ = 12191218600.

The previous prime is 20115510991. The next prime is 20115511099. The reversal of 20115511053 is 35011551102.

It is not a de Polignac number, because 20115511053 - 2²⁹ = 19578640141 is a prime.

It is a super-3 number, since 3×20115511053³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20115511453) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 27706953 + ... + 27707678.

It is an arithmetic number, because the mean of its divisors is an integer number (2456715352).

Almost surely, 2^20115511053 is an apocalyptic number.

It is an amenable number.

20115511053 is a deficient number, since it is larger than the sum of its proper divisors (9365073171).

20115511053 is a wasteful number, since it uses less digits than its factorization.

20115511053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55414656 (or 55414645 counting only the distinct ones).

The product of its (nonzero) digits is 750, while the sum is 24.

The spelling of 20115511053 in words is "twenty billion, one hundred fifteen million, five hundred eleven thousand, fifty-three".