51036809188 has 48 divisors (see below), whose sum is σ = 97534080000. Its totient is φ = 23275219968.

The previous prime is 51036809147. The next prime is 51036809189. The reversal of 51036809188 is 88190863015.

It is not an unprimeable number, because it can be changed into a prime (51036809189) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 745213 + ... + 810811.

It is an arithmetic number, because the mean of its divisors is an integer number (2031960000).

Almost surely, 2^51036809188 is an apocalyptic number.

51036809188 is a gapful number since it is divisible by the number (58) formed by its first and last digit.

It is an amenable number.

51036809188 is a deficient number, since it is larger than the sum of its proper divisors (46497270812).

51036809188 is a wasteful number, since it uses less digits than its factorization.

51036809188 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66004 (or 66002 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 49.

The spelling of 51036809188 in words is "fifty-one billion, thirty-six million, eight hundred nine thousand, one hundred eighty-eight".