77730078111512 has 64 divisors (see below), whose sum is σ = 152584653873600. Its totient is φ = 37052114964480.

The previous prime is 77730078111467. The next prime is 77730078111551. The reversal of 77730078111512 is 21511187003777.

It is a happy number.

77730078111512 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×77730078111512² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 180165812 + ... + 180596732.

It is an arithmetic number, because the mean of its divisors is an integer number (2384135216775).

Almost surely, 2^{77730078111512} is an apocalyptic number.

It is an amenable number.

77730078111512 is a deficient number, since it is larger than the sum of its proper divisors (74854575762088).

77730078111512 is a wasteful number, since it uses less digits than its factorization.

77730078111512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 434196 (or 434192 counting only the distinct ones).

The product of its (nonzero) digits is 576240, while the sum is 50.

The spelling of 77730078111512 in words is "seventy-seven trillion, seven hundred thirty billion, seventy-eight million, one hundred eleven thousand, five hundred twelve".