51637797950 has 24 divisors (see below), whose sum is σ = 100222232688. Its totient is φ = 19757070080.

The previous prime is 51637797947. The next prime is 51637797971. The reversal of 51637797950 is 5979773615.

It is a self number, because there is not a number n which added to its sum of digits gives 51637797950.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22450067 + ... + 22452366.

It is an arithmetic number, because the mean of its divisors is an integer number (4175926362).

Almost surely, 2^51637797950 is an apocalyptic number.

51637797950 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

51637797950 is a deficient number, since it is larger than the sum of its proper divisors (48584434738).

51637797950 is a wasteful number, since it uses less digits than its factorization.

51637797950 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44902468 (or 44902463 counting only the distinct ones).

The product of its (nonzero) digits is 12502350, while the sum is 59.

The spelling of 51637797950 in words is "fifty-one billion, six hundred thirty-seven million, seven hundred ninety-seven thousand, nine hundred fifty".