191052436856 has 32 divisors (see below), whose sum is σ = 372794940000. Its totient is φ = 91679903616.

The previous prime is 191052436843. The next prime is 191052436867. The reversal of 191052436856 is 658634250191.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2426831 + ... + 2504318.

It is an arithmetic number, because the mean of its divisors is an integer number (11649841875).

Almost surely, 2^191052436856 is an apocalyptic number.

It is an amenable number.

191052436856 is a deficient number, since it is larger than the sum of its proper divisors (181742503144).

191052436856 is a wasteful number, since it uses less digits than its factorization.

191052436856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4931351 (or 4931347 counting only the distinct ones).

The product of its (nonzero) digits is 1555200, while the sum is 50.

The spelling of 191052436856 in words is "one hundred ninety-one billion, fifty-two million, four hundred thirty-six thousand, eight hundred fifty-six".