51171197152 has 24 divisors (see below), whose sum is σ = 101187111816. Its totient is φ = 25472883072.

The previous prime is 51171197113. The next prime is 51171197183. The reversal of 51171197152 is 25179117115.

It is a super-2 number, since 2×51171197152² (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 3 ways as a sum of consecutive naturals, for example, 3514983 + ... + 3529510.

It is an arithmetic number, because the mean of its divisors is an integer number (4216129659).

Almost surely, 2^51171197152 is an apocalyptic number.

It is an amenable number.

51171197152 is a deficient number, since it is larger than the sum of its proper divisors (50015914664).

51171197152 is a wasteful number, since it uses less digits than its factorization.

51171197152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7044730 (or 7044722 counting only the distinct ones).

The product of its digits is 22050, while the sum is 40.

The spelling of 51171197152 in words is "fifty-one billion, one hundred seventy-one million, one hundred ninety-seven thousand, one hundred fifty-two".