20612156612 has 12 divisors (see below), whose sum is σ = 37969762320. Its totient is φ = 9763653096.

The previous prime is 20612156569. The next prime is 20612156693. The reversal of 20612156612 is 21665121602.

It is a super-2 number, since 2×20612156612² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 135606218 + ... + 135606369.

It is an arithmetic number, because the mean of its divisors is an integer number (3164146860).

Almost surely, 2^20612156612 is an apocalyptic number.

It is an amenable number.

20612156612 is a deficient number, since it is larger than the sum of its proper divisors (17357605708).

20612156612 is a wasteful number, since it uses less digits than its factorization.

20612156612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 271212610 (or 271212608 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 32.

The spelling of 20612156612 in words is "twenty billion, six hundred twelve million, one hundred fifty-six thousand, six hundred twelve".