191820225296 has 40 divisors (see below), whose sum is σ = 434622581184. Its totient is φ = 80296836480.

The previous prime is 191820225269. The next prime is 191820225323. The reversal of 191820225296 is 692522028191.

It is an interprime number because it is at equal distance from previous prime (191820225269) and next prime (191820225323).

It is a self number, because there is not a number n which added to its sum of digits gives 191820225296.

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, 19910075 + ... + 19919706.

Almost surely, 2^191820225296 is an apocalyptic number.

191820225296 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

191820225296 is an abundant number, since it is smaller than the sum of its proper divisors (242802355888).

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

191820225296 is a wasteful number, since it uses less digits than its factorization.

191820225296 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39829839 (or 39829833 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 47.

The spelling of 191820225296 in words is "one hundred ninety-one billion, eight hundred twenty million, two hundred twenty-five thousand, two hundred ninety-six".