20475011612 has 36 divisors (see below), whose sum is σ = 39449605608. Its totient is φ = 9291506400.

The previous prime is 20475011597. The next prime is 20475011647. The reversal of 20475011612 is 21611057402.

It is a super-2 number, since 2×20475011612² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 262187 + ... + 331197.

It is an arithmetic number, because the mean of its divisors is an integer number (1095822378).

Almost surely, 2^20475011612 is an apocalyptic number.

20475011612 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

20475011612 is a deficient number, since it is larger than the sum of its proper divisors (18974593996).

20475011612 is a wasteful number, since it uses less digits than its factorization.

20475011612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69650 (or 69637 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 29.

The spelling of 20475011612 in words is "twenty billion, four hundred seventy-five million, eleven thousand, six hundred twelve".