91992801901 has 16 divisors (see below), whose sum is σ = 123514812288. Its totient is φ = 66168648000.

The previous prime is 91992801883. The next prime is 91992801931. The reversal of 91992801901 is 10910829919.

It is not a de Polignac number, because 91992801901 - 2¹⁵ = 91992769133 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91992801931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45949450 + ... + 45951451.

It is an arithmetic number, because the mean of its divisors is an integer number (7719675768).

Almost surely, 2^91992801901 is an apocalyptic number.

91992801901 is a gapful number since it is divisible by the number (91) formed by its first and last digit.

It is an amenable number.

91992801901 is a deficient number, since it is larger than the sum of its proper divisors (31522010387).

91992801901 is a wasteful number, since it uses less digits than its factorization.

91992801901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91900932.

The product of its (nonzero) digits is 104976, while the sum is 49.

The spelling of 91992801901 in words is "ninety-one billion, nine hundred ninety-two million, eight hundred one thousand, nine hundred one".