51171753660 has 48 divisors (see below), whose sum is σ = 144023330976. Its totient is φ = 13575094272.

The previous prime is 51171753631. The next prime is 51171753683. The reversal of 51171753660 is 6635717115.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2197909 + ... + 2221068.

It is an arithmetic number, because the mean of its divisors is an integer number (3000486062).

Almost surely, 2^51171753660 is an apocalyptic number.

It is an amenable number.

51171753660 is an abundant number, since it is smaller than the sum of its proper divisors (92851577316).

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

51171753660 is a wasteful number, since it uses less digits than its factorization.

51171753660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4419182 (or 4419180 counting only the distinct ones).

The product of its (nonzero) digits is 132300, while the sum is 42.

The spelling of 51171753660 in words is "fifty-one billion, one hundred seventy-one million, seven hundred fifty-three thousand, six hundred sixty".