77387078376 has 128 divisors (see below), whose sum is σ = 223743888000. Its totient is φ = 24753060864.

The previous prime is 77387078341. The next prime is 77387078429. The reversal of 77387078376 is 67387078377.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 983136 + ... + 1058928.

It is an arithmetic number, because the mean of its divisors is an integer number (1747999125).

Almost surely, 2^77387078376 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 77387078376, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (111871944000).

77387078376 is an abundant number, since it is smaller than the sum of its proper divisors (146356809624).

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

77387078376 is a wasteful number, since it uses less digits than its factorization.

77387078376 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76000 (or 75990 counting only the distinct ones).

The product of its (nonzero) digits is 58084992, while the sum is 63.

Subtracting from 77387078376 its reverse (67387078377), we obtain a palindrome (9999999999).

The spelling of 77387078376 in words is "seventy-seven billion, three hundred eighty-seven million, seventy-eight thousand, three hundred seventy-six".