51732977791 has 12 divisors (see below), whose sum is σ = 56918705536. Its totient is φ = 46984338720.

The previous prime is 51732977749. The next prime is 51732977843. The reversal of 51732977791 is 19777923715.

51732977791 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 51732977791 - 2¹⁵ = 51732945023 is a prime.

It is a super-2 number, since 2×51732977791² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51732977741) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 81951 + ... + 331936.

Almost surely, 2^51732977791 is an apocalyptic number.

51732977791 is a deficient number, since it is larger than the sum of its proper divisors (5185727745).

51732977791 is a wasteful number, since it uses less digits than its factorization.

51732977791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 414942 (or 414931 counting only the distinct ones).

The product of its digits is 5834430, while the sum is 58.

The spelling of 51732977791 in words is "fifty-one billion, seven hundred thirty-two million, nine hundred seventy-seven thousand, seven hundred ninety-one".