191425176680 has 32 divisors (see below), whose sum is σ = 438006765600. Its totient is φ = 75272271936.

The previous prime is 191425176647. The next prime is 191425176689. The reversal of 191425176680 is 86671524191.

It is a Smith number, since the sum of its digits (50) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (191425176689) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40553822 + ... + 40558541.

It is an arithmetic number, because the mean of its divisors is an integer number (13687711425).

Almost surely, 2^191425176680 is an apocalyptic number.

191425176680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

191425176680 is an abundant number, since it is smaller than the sum of its proper divisors (246581588920).

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

191425176680 is a wasteful number, since it uses less digits than its factorization.

191425176680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81112433 (or 81112429 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 50.

The spelling of 191425176680 in words is "one hundred ninety-one billion, four hundred twenty-five million, one hundred seventy-six thousand, six hundred eighty".