51405367876 has 12 divisors (see below), whose sum is σ = 90012416508. Its totient is φ = 25687534592.

The previous prime is 51405367847. The next prime is 51405367891. The reversal of 51405367876 is 67876350415.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 37412843776 + 13992524100 = 193424^2 + 118290^2 .

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, 3779701 + ... + 3793276.

It is an arithmetic number, because the mean of its divisors is an integer number (7501034709).

Almost surely, 2^51405367876 is an apocalyptic number.

It is an amenable number.

51405367876 is a deficient number, since it is larger than the sum of its proper divisors (38607048632).

51405367876 is a wasteful number, since it uses less digits than its factorization.

51405367876 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7574678 (or 7574676 counting only the distinct ones).

The product of its (nonzero) digits is 4233600, while the sum is 52.

The spelling of 51405367876 in words is "fifty-one billion, four hundred five million, three hundred sixty-seven thousand, eight hundred seventy-six".