77038719516 has 96 divisors (see below), whose sum is σ = 218200469760. Its totient is φ = 23311512000.

The previous prime is 77038719509. The next prime is 77038719521. The reversal of 77038719516 is 61591783077.

77038719516 is a `hidden beast` number, since 7 + 70 + 387 + 195 + 1 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 786535 + ... + 879041.

It is an arithmetic number, because the mean of its divisors is an integer number (2272921560).

Almost surely, 2^77038719516 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 77038719516, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (109100234880).

77038719516 is an abundant number, since it is smaller than the sum of its proper divisors (141161750244).

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

77038719516 is a wasteful number, since it uses less digits than its factorization.

77038719516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93232 (or 93224 counting only the distinct ones).

The product of its (nonzero) digits is 2222640, while the sum is 54.

The spelling of 77038719516 in words is "seventy-seven billion, thirty-eight million, seven hundred nineteen thousand, five hundred sixteen".