77880013751 has 8 divisors (see below), whose sum is σ = 79095128640. Its totient is φ = 76674001248.

The previous prime is 77880013741. The next prime is 77880013759. The reversal of 77880013751 is 15731008877.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-77880013751 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 77880013696 and 77880013705.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77880013759) 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, 2258351 + ... + 2292576.

It is an arithmetic number, because the mean of its divisors is an integer number (9886891080).

Almost surely, 2^77880013751 is an apocalyptic number.

77880013751 is a deficient number, since it is larger than the sum of its proper divisors (1215114889).

77880013751 is a wasteful number, since it uses less digits than its factorization.

77880013751 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4551193.

The product of its (nonzero) digits is 329280, while the sum is 47.

The spelling of 77880013751 in words is "seventy-seven billion, eight hundred eighty million, thirteen thousand, seven hundred fifty-one".