51497983436 has 12 divisors (see below), whose sum is σ = 90133194312. Its totient is φ = 25745642208.

The previous prime is 51497983429. The next prime is 51497983441. The reversal of 51497983436 is 63438979415.

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, 802625 + ... + 864408.

It is an arithmetic number, because the mean of its divisors is an integer number (7511099526).

Almost surely, 2^51497983436 is an apocalyptic number.

It is an amenable number.

51497983436 is a deficient number, since it is larger than the sum of its proper divisors (38635210876).

51497983436 is a wasteful number, since it uses less digits than its factorization.

51497983436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1674760 (or 1674758 counting only the distinct ones).

The product of its digits is 19595520, while the sum is 59.

The spelling of 51497983436 in words is "fifty-one billion, four hundred ninety-seven million, nine hundred eighty-three thousand, four hundred thirty-six".