51931146426 has 16 divisors (see below), whose sum is σ = 106669382304. Its totient is φ = 16842533904.

The previous prime is 51931146373. The next prime is 51931146433. The reversal of 51931146426 is 62464113915.

It is a happy number.

51931146426 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 116961820 + ... + 116962263.

It is an arithmetic number, because the mean of its divisors is an integer number (6666836394).

Almost surely, 2^51931146426 is an apocalyptic number.

51931146426 is an abundant number, since it is smaller than the sum of its proper divisors (54738235878).

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

51931146426 is a wasteful number, since it uses less digits than its factorization.

51931146426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 233924125.

The product of its digits is 155520, while the sum is 42.

The spelling of 51931146426 in words is "fifty-one billion, nine hundred thirty-one million, one hundred forty-six thousand, four hundred twenty-six".