191097030660 has 24 divisors (see below), whose sum is σ = 535071686016. Its totient is φ = 50959208160.

The previous prime is 191097030659. The next prime is 191097030661. The reversal of 191097030660 is 66030790191.

It is an interprime number because it is at equal distance from previous prime (191097030659) and next prime (191097030661).

It is not an unprimeable number, because it can be changed into a prime (191097030661) 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, 1592475196 + ... + 1592475315.

It is an arithmetic number, because the mean of its divisors is an integer number (22294653584).

Almost surely, 2^191097030660 is an apocalyptic number.

191097030660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

191097030660 is an abundant number, since it is smaller than the sum of its proper divisors (343974655356).

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

191097030660 is a wasteful number, since it uses less digits than its factorization.

191097030660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3184950523 (or 3184950521 counting only the distinct ones).

The product of its (nonzero) digits is 61236, while the sum is 42.

The spelling of 191097030660 in words is "one hundred ninety-one billion, ninety-seven million, thirty thousand, six hundred sixty".