20651950000812 has 48 divisors (see below), whose sum is σ = 52163527831520. Its totient is φ = 6321521553408.

The previous prime is 20651950000753. The next prime is 20651950000813. The reversal of 20651950000812 is 21800005915602.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (20651950000813) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 342934387 + ... + 342994602.

Almost surely, 2^{20651950000812} is an apocalyptic number.

It is an amenable number.

20651950000812 is an abundant number, since it is smaller than the sum of its proper divisors (31511577830708).

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

20651950000812 is a wasteful number, since it uses less digits than its factorization.

20651950000812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 685929202 (or 685929200 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 39.

The spelling of 20651950000812 in words is "twenty trillion, six hundred fifty-one billion, nine hundred fifty million, eight hundred twelve", and thus it is an aban number.