91025915654 has 16 divisors (see below), whose sum is σ = 144774226800. Its totient is φ = 42802809984.

The previous prime is 91025915641. The next prime is 91025915681. The reversal of 91025915654 is 45651952019.

It is a junction number, because it is equal to n+sod(n) for n = 91025915599 and 91025915608.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8737199 + ... + 8747610.

It is an arithmetic number, because the mean of its divisors is an integer number (9048389175).

Almost surely, 2^91025915654 is an apocalyptic number.

91025915654 is a deficient number, since it is larger than the sum of its proper divisors (53748311146).

91025915654 is a wasteful number, since it uses less digits than its factorization.

91025915654 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17484967.

The product of its (nonzero) digits is 486000, while the sum is 47.

The spelling of 91025915654 in words is "ninety-one billion, twenty-five million, nine hundred fifteen thousand, six hundred fifty-four".