101991292079 has 8 divisors (see below), whose sum is σ = 107369383680. Its totient is φ = 96614213400.

The previous prime is 101991292061. The next prime is 101991292087. The reversal of 101991292079 is 970292199101.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 101991292079 - 2⁸ = 101991291823 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101991292019) 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, 42017 + ... + 453594.

It is an arithmetic number, because the mean of its divisors is an integer number (13421172960).

Almost surely, 2^101991292079 is an apocalyptic number.

101991292079 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

101991292079 is a deficient number, since it is larger than the sum of its proper divisors (5378091601).

101991292079 is a wasteful number, since it uses less digits than its factorization.

101991292079 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 506461.

The product of its (nonzero) digits is 183708, while the sum is 50.

The spelling of 101991292079 in words is "one hundred one billion, nine hundred ninety-one million, two hundred ninety-two thousand, seventy-nine".