91321064110554 has 32 divisors (see below), whose sum is σ = 184416697745280. Its totient is φ = 30144597427392.

The previous prime is 91321064110511. The next prime is 91321064110571. The reversal of 91321064110554 is 45501146012319.

It is a super-2 number, since 2×91321064110554² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 99186232 + ... + 100102700.

It is an arithmetic number, because the mean of its divisors is an integer number (5763021804540).

Almost surely, 2^{91321064110554} is an apocalyptic number.

91321064110554 is an abundant number, since it is smaller than the sum of its proper divisors (93095633634726).

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

91321064110554 is a wasteful number, since it uses less digits than its factorization.

91321064110554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1077814.

The product of its (nonzero) digits is 129600, while the sum is 42.

The spelling of 91321064110554 in words is "ninety-one trillion, three hundred twenty-one billion, sixty-four million, one hundred ten thousand, five hundred fifty-four".