191490696320 has 256 divisors, whose sum is σ = 572047660800. Its totient is φ = 59548876800.

The previous prime is 191490696317. The next prime is 191490696343. The reversal of 191490696320 is 23696094191.

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

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 22713866 + ... + 22722294.

It is an arithmetic number, because the mean of its divisors is an integer number (2234561175).

Almost surely, 2^191490696320 is an apocalyptic number.

191490696320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 191490696320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (286023830400).

191490696320 is an abundant number, since it is smaller than the sum of its proper divisors (380556964480).

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

191490696320 is a wasteful number, since it uses less digits than its factorization.

191490696320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8927 (or 8915 counting only the distinct ones).

The product of its (nonzero) digits is 629856, while the sum is 50.

The spelling of 191490696320 in words is "one hundred ninety-one billion, four hundred ninety million, six hundred ninety-six thousand, three hundred twenty".