51187277757 has 16 divisors (see below), whose sum is σ = 85090540032. Its totient is φ = 26590793520.

The previous prime is 51187277741. The next prime is 51187277803. The reversal of 51187277757 is 75777278115.

It is a happy number.

It is not a de Polignac number, because 51187277757 - 2⁴ = 51187277741 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 51187277697 and 51187277706.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51187277707) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 110794743 + ... + 110795204.

It is an arithmetic number, because the mean of its divisors is an integer number (5318158752).

Almost surely, 2^51187277757 is an apocalyptic number.

It is an amenable number.

51187277757 is a deficient number, since it is larger than the sum of its proper divisors (33903262275).

51187277757 is a wasteful number, since it uses less digits than its factorization.

51187277757 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221589968.

The product of its digits is 6722800, while the sum is 57.

The spelling of 51187277757 in words is "fifty-one billion, one hundred eighty-seven million, two hundred seventy-seven thousand, seven hundred fifty-seven".