77783075387136 has 288 divisors, whose sum is σ = 266045204651520. Its totient is φ = 21955978838016.

The previous prime is 77783075387123. The next prime is 77783075387191. The reversal of 77783075387136 is 63178357038777.

77783075387136 is a `hidden beast` number, since 7 + 7 + 7 + 83 + 0 + 7 + 538 + 7 + 1 + 3 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (288).

It is a Harshad number since it is a multiple of its sum of digits (72).

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, 5668585 + ... + 13700328.

Almost surely, 2^{77783075387136} is an apocalyptic number.

It is an amenable number.

77783075387136 is an abundant number, since it is smaller than the sum of its proper divisors (188262129264384).

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

77783075387136 is a wasteful number, since it uses less digits than its factorization.

77783075387136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19369028 (or 19369008 counting only the distinct ones).

The product of its (nonzero) digits is 871274880, while the sum is 72.

The spelling of 77783075387136 in words is "seventy-seven trillion, seven hundred eighty-three billion, seventy-five million, three hundred eighty-seven thousand, one hundred thirty-six".