77153777616 has 40 divisors (see below), whose sum is σ = 205743410944. Its totient is φ = 24888314880.

The previous prime is 77153777579. The next prime is 77153777651. The reversal of 77153777616 is 61677735177.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25923841 + ... + 25926816.

Almost surely, 2^77153777616 is an apocalyptic number.

It is an amenable number.

77153777616 is an abundant number, since it is smaller than the sum of its proper divisors (128589633328).

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

77153777616 is a wasteful number, since it uses less digits than its factorization.

77153777616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51850699 (or 51850693 counting only the distinct ones).

The product of its digits is 9075780, while the sum is 57.

The spelling of 77153777616 in words is "seventy-seven billion, one hundred fifty-three million, seven hundred seventy-seven thousand, six hundred sixteen".