51992784912 has 20 divisors (see below), whose sum is σ = 134314694480. Its totient is φ = 17330928288.

The previous prime is 51992784881. The next prime is 51992784947. The reversal of 51992784912 is 21948729915.

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, 541591462 + ... + 541591557.

It is an arithmetic number, because the mean of its divisors is an integer number (6715734724).

Almost surely, 2^51992784912 is an apocalyptic number.

It is an amenable number.

51992784912 is an abundant number, since it is smaller than the sum of its proper divisors (82321909568).

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

51992784912 is a wasteful number, since it uses less digits than its factorization.

51992784912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1083183030 (or 1083183024 counting only the distinct ones).

The product of its digits is 3265920, while the sum is 57.

The spelling of 51992784912 in words is "fifty-one billion, nine hundred ninety-two million, seven hundred eighty-four thousand, nine hundred twelve".