51179199269 has 6 divisors (see below), whose sum is σ = 56254822470. Its totient is φ = 46526544680.

The previous prime is 51179199263. The next prime is 51179199289. The reversal of 51179199269 is 96299197115.

51179199269 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 37196136769 + 13983062500 = 192863^2 + 118250^2 .

It is not a de Polignac number, because 51179199269 - 2²⁴ = 51162422053 is a prime.

It is a super-2 number, since 2×51179199269² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51179199263) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 211484174 + ... + 211484415.

It is an arithmetic number, because the mean of its divisors is an integer number (9375803745).

Almost surely, 2^51179199269 is an apocalyptic number.

It is an amenable number.

51179199269 is a deficient number, since it is larger than the sum of its proper divisors (5075623201).

51179199269 is a wasteful number, since it uses less digits than its factorization.

51179199269 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 422968611 (or 422968600 counting only the distinct ones).

The product of its digits is 2755620, while the sum is 59.

The spelling of 51179199269 in words is "fifty-one billion, one hundred seventy-nine million, one hundred ninety-nine thousand, two hundred sixty-nine".