77551358512 has 20 divisors (see below), whose sum is σ = 158163955480. Its totient is φ = 36734853888.

The previous prime is 77551358501. The next prime is 77551358519. The reversal of 77551358512 is 21585315577.

It is not an unprimeable number, because it can be changed into a prime (77551358519) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 127551273 + ... + 127551880.

It is an arithmetic number, because the mean of its divisors is an integer number (7908197774).

Almost surely, 2^77551358512 is an apocalyptic number.

It is an amenable number.

77551358512 is an abundant number, since it is smaller than the sum of its proper divisors (80612596968).

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

77551358512 is a wasteful number, since it uses less digits than its factorization.

77551358512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255103180 (or 255103174 counting only the distinct ones).

The product of its digits is 1470000, while the sum is 49.

The spelling of 77551358512 in words is "seventy-seven billion, five hundred fifty-one million, three hundred fifty-eight thousand, five hundred twelve".