51177161688 has 32 divisors (see below), whose sum is σ = 128473802160. Its totient is φ = 16988267520.

The previous prime is 51177161683. The next prime is 51177161699. The reversal of 51177161688 is 88616177115.

It is a self number, because there is not a number n which added to its sum of digits gives 51177161688.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51177161683) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4418245 + ... + 4429812.

Almost surely, 2^51177161688 is an apocalyptic number.

It is an amenable number.

51177161688 is an abundant number, since it is smaller than the sum of its proper divisors (77296640472).

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

51177161688 is a wasteful number, since it uses less digits than its factorization.

51177161688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8848307 (or 8848303 counting only the distinct ones).

The product of its digits is 564480, while the sum is 51.

The spelling of 51177161688 in words is "fifty-one billion, one hundred seventy-seven million, one hundred sixty-one thousand, six hundred eighty-eight".