20992427396 has 12 divisors (see below), whose sum is σ = 37179359952. Its totient is φ = 10369753128.

The previous prime is 20992427371. The next prime is 20992427399. The reversal of 20992427396 is 69372429902.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (20992427399) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31614770 + ... + 31615433.

It is an arithmetic number, because the mean of its divisors is an integer number (3098279996).

Almost surely, 2^20992427396 is an apocalyptic number.

It is an amenable number.

20992427396 is a deficient number, since it is larger than the sum of its proper divisors (16186932556).

20992427396 is a wasteful number, since it uses less digits than its factorization.

20992427396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63230290 (or 63230288 counting only the distinct ones).

The product of its (nonzero) digits is 2939328, while the sum is 53.

The spelling of 20992427396 in words is "twenty billion, nine hundred ninety-two million, four hundred twenty-seven thousand, three hundred ninety-six".