51383637431 has 8 divisors (see below), whose sum is σ = 59719482240. Its totient is φ = 43296623928.

The previous prime is 51383637401. The next prime is 51383637467. The reversal of 51383637431 is 13473638315.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51383637431 is a prime.

It is a super-2 number, since 2×51383637431² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51383637401) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62207381 + ... + 62208206.

It is an arithmetic number, because the mean of its divisors is an integer number (7464935280).

Almost surely, 2^51383637431 is an apocalyptic number.

51383637431 is a deficient number, since it is larger than the sum of its proper divisors (8335844809).

51383637431 is a wasteful number, since it uses less digits than its factorization.

51383637431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124415653.

The product of its digits is 544320, while the sum is 44.

The spelling of 51383637431 in words is "fifty-one billion, three hundred eighty-three million, six hundred thirty-seven thousand, four hundred thirty-one".