91455103640 has 48 divisors (see below), whose sum is σ = 207918090000. Its totient is φ = 36204758016.

The previous prime is 91455103639. The next prime is 91455103651. The reversal of 91455103640 is 4630155419.

It is a junction number, because it is equal to n+sod(n) for n = 91455103594 and 91455103603.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 254861 + ... + 497859.

It is an arithmetic number, because the mean of its divisors is an integer number (4331626875).

Almost surely, 2^91455103640 is an apocalyptic number.

It is an amenable number.

91455103640 is an abundant number, since it is smaller than the sum of its proper divisors (116462986360).

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

91455103640 is a wasteful number, since it uses less digits than its factorization.

91455103640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 243204 (or 243103 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 38.

The spelling of 91455103640 in words is "ninety-one billion, four hundred fifty-five million, one hundred three thousand, six hundred forty".