77375457376 has 96 divisors (see below), whose sum is σ = 180123568128. Its totient is φ = 32017489920.

The previous prime is 77375457373. The next prime is 77375457377. The reversal of 77375457376 is 67375457377.

It is a happy number.

It is a super-2 number, since 2×77375457376² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77375457371) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3063616 + ... + 3088768.

It is an arithmetic number, because the mean of its divisors is an integer number (1876287168).

Almost surely, 2^77375457376 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 77375457376, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (90061784064).

77375457376 is an abundant number, since it is smaller than the sum of its proper divisors (102748110752).

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

77375457376 is a wasteful number, since it uses less digits than its factorization.

77375457376 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25644 (or 25636 counting only the distinct ones).

The product of its digits is 90757800, while the sum is 61.

Subtracting from 77375457376 its reverse (67375457377), we obtain a palindrome (9999999999).

The spelling of 77375457376 in words is "seventy-seven billion, three hundred seventy-five million, four hundred fifty-seven thousand, three hundred seventy-six".