856788611078 has 4 divisors (see below), whose sum is σ = 1285182916620. Its totient is φ = 428394305538.

The previous prime is 856788611069. The next prime is 856788611093. The reversal of 856788611078 is 870116887658.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 214197152768 + ... + 214197152771.

It is an arithmetic number, because the mean of its divisors is an integer number (321295729155).

Almost surely, 2^856788611078 is an apocalyptic number.

856788611078 is a deficient number, since it is larger than the sum of its proper divisors (428394305542).

856788611078 is a wasteful number, since it uses less digits than its factorization.

856788611078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 428394305541.

The product of its (nonzero) digits is 36126720, while the sum is 65.

The spelling of 856788611078 in words is "eight hundred fifty-six billion, seven hundred eighty-eight million, six hundred eleven thousand, seventy-eight".