77600734512 has 160 divisors (see below), whose sum is σ = 231009833472. Its totient is φ = 21988288512.

The previous prime is 77600734459. The next prime is 77600734537. The reversal of 77600734512 is 21543700677.

It is a Harshad number since it is a multiple of its sum of digits (42).

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, 21125508 + ... + 21129180.

Almost surely, 2^77600734512 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 77600734512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (115504916736).

77600734512 is an abundant number, since it is smaller than the sum of its proper divisors (153409098960).

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

77600734512 is a wasteful number, since it uses less digits than its factorization.

77600734512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4195 (or 4189 counting only the distinct ones).

The product of its (nonzero) digits is 246960, while the sum is 42.

The spelling of 77600734512 in words is "seventy-seven billion, six hundred million, seven hundred thirty-four thousand, five hundred twelve".