20111097604 has 96 divisors (see below), whose sum is σ = 40979441664. Its totient is φ = 8559682560.

The previous prime is 20111097557. The next prime is 20111097701. The reversal of 20111097604 is 40679011102.

It is a super-2 number, since 2×20111097604² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11603922 + ... + 11605654.

It is an arithmetic number, because the mean of its divisors is an integer number (426869184).

Almost surely, 2^20111097604 is an apocalyptic number.

It is an amenable number.

20111097604 is an abundant number, since it is smaller than the sum of its proper divisors (20868344060).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20111097604 is a wasteful number, since it uses less digits than its factorization.

20111097604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2117 (or 2115 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 31.

The spelling of 20111097604 in words is "twenty billion, one hundred eleven million, ninety-seven thousand, six hundred four".