77800012385712 has 40 divisors (see below), whose sum is σ = 200991261640704. Its totient is φ = 25932318583104.

The previous prime is 77800012385701. The next prime is 77800012385731. The reversal of 77800012385712 is 21758321000877.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30605008 + ... + 33049455.

Almost surely, 2^{77800012385712} is an apocalyptic number.

It is an amenable number.

77800012385712 is an abundant number, since it is smaller than the sum of its proper divisors (123191249254992).

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

77800012385712 is a wasteful number, since it uses less digits than its factorization.

77800012385712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63679937 (or 63679931 counting only the distinct ones).

The product of its (nonzero) digits is 1317120, while the sum is 51.

The spelling of 77800012385712 in words is "seventy-seven trillion, eight hundred billion, twelve million, three hundred eighty-five thousand, seven hundred twelve".