51131062446 has 16 divisors (see below), whose sum is σ = 103254962304. Its totient is φ = 16878214584.

The previous prime is 51131062427. The next prime is 51131062487. The reversal of 51131062446 is 64426013115.

It is a super-2 number, since 2×51131062446² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

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, 41367556 + ... + 41368791.

It is an arithmetic number, because the mean of its divisors is an integer number (6453435144).

Almost surely, 2^51131062446 is an apocalyptic number.

51131062446 is an abundant number, since it is smaller than the sum of its proper divisors (52123899858).

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

51131062446 is a wasteful number, since it uses less digits than its factorization.

51131062446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82736455.

The product of its (nonzero) digits is 17280, while the sum is 33.

The spelling of 51131062446 in words is "fifty-one billion, one hundred thirty-one million, sixty-two thousand, four hundred forty-six".