77215693434 has 32 divisors (see below), whose sum is σ = 168502339584. Its totient is φ = 23394287280.

The previous prime is 77215693427. The next prime is 77215693441. The reversal of 77215693434 is 43439651277.

It is an interprime number because it is at equal distance from previous prime (77215693427) and next prime (77215693441).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 251767 + ... + 466709.

It is an arithmetic number, because the mean of its divisors is an integer number (5265698112).

Almost surely, 2^77215693434 is an apocalyptic number.

77215693434 is an abundant number, since it is smaller than the sum of its proper divisors (91286646150).

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

77215693434 is a wasteful number, since it uses less digits than its factorization.

77215693434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 220402.

The product of its digits is 3810240, while the sum is 51.

The spelling of 77215693434 in words is "seventy-seven billion, two hundred fifteen million, six hundred ninety-three thousand, four hundred thirty-four".