51690741092 has 12 divisors (see below), whose sum is σ = 93578065980. Its totient is φ = 24954150816.

The previous prime is 51690741083. The next prime is 51690741169. The reversal of 51690741092 is 29014709615.

It can be written as a sum of positive squares in 2 ways, for example, as 26420551936 + 25270189156 = 162544^2 + 158966^2 .

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, 222804803 + ... + 222805034.

It is an arithmetic number, because the mean of its divisors is an integer number (7798172165).

Almost surely, 2^51690741092 is an apocalyptic number.

It is an amenable number.

51690741092 is a deficient number, since it is larger than the sum of its proper divisors (41887324888).

51690741092 is a wasteful number, since it uses less digits than its factorization.

51690741092 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 445609870 (or 445609868 counting only the distinct ones).

The product of its (nonzero) digits is 136080, while the sum is 44.

The spelling of 51690741092 in words is "fifty-one billion, six hundred ninety million, seven hundred forty-one thousand, ninety-two".