51420890112 has 44 divisors (see below), whose sum is σ = 137055427536. Its totient is φ = 17140295680.

The previous prime is 51420890107. The next prime is 51420890113. The reversal of 51420890112 is 21109802415.

It is not an unprimeable number, because it can be changed into a prime (51420890113) 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, 8366214 + ... + 8372357.

Almost surely, 2^51420890112 is an apocalyptic number.

It is an amenable number.

51420890112 is an abundant number, since it is smaller than the sum of its proper divisors (85634537424).

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

51420890112 is a wasteful number, since it uses less digits than its factorization.

51420890112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16738594 (or 16738576 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 33.

The spelling of 51420890112 in words is "fifty-one billion, four hundred twenty million, eight hundred ninety thousand, one hundred twelve".