51197738604 has 24 divisors (see below), whose sum is σ = 121715380080. Its totient is φ = 16743914304.

The previous prime is 51197738593. The next prime is 51197738609. The reversal of 51197738604 is 40683779115.

It is a happy number.

It is a super-3 number, since 3×51197738604³ (a number of 33 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (51197738609) 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, 40249159 + ... + 40250430.

It is an arithmetic number, because the mean of its divisors is an integer number (5071474170).

Almost surely, 2^51197738604 is an apocalyptic number.

It is an amenable number.

51197738604 is an abundant number, since it is smaller than the sum of its proper divisors (70517641476).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51197738604 is a wasteful number, since it uses less digits than its factorization.

51197738604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80499649 (or 80499647 counting only the distinct ones).

The product of its (nonzero) digits is 1270080, while the sum is 51.

The spelling of 51197738604 in words is "fifty-one billion, one hundred ninety-seven million, seven hundred thirty-eight thousand, six hundred four".