51070207172 has 12 divisors (see below), whose sum is σ = 89393109036. Its totient is φ = 25529318880.

The previous prime is 51070207163. The next prime is 51070207207. The reversal of 51070207172 is 27170207015.

It can be written as a sum of positive squares in 2 ways, for example, as 38676728896 + 12393478276 = 196664^2 + 111326^2 .

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, 1426283 + ... + 1461650.

It is an arithmetic number, because the mean of its divisors is an integer number (7449425753).

Almost surely, 2^51070207172 is an apocalyptic number.

It is an amenable number.

51070207172 is a deficient number, since it is larger than the sum of its proper divisors (38322901864).

51070207172 is a wasteful number, since it uses less digits than its factorization.

51070207172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2892358 (or 2892356 counting only the distinct ones).

The product of its (nonzero) digits is 6860, while the sum is 32.

The spelling of 51070207172 in words is "fifty-one billion, seventy million, two hundred seven thousand, one hundred seventy-two".