91438090269216 has 48 divisors (see below), whose sum is σ = 247767728479488. Its totient is φ = 29496158150400.

The previous prime is 91438090269203. The next prime is 91438090269277. The reversal of 91438090269216 is 61296209083419.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-3 number, since 3×91438090269216³ (a number of 43 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 91438090269216.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15362579395 + ... + 15362585346.

It is an arithmetic number, because the mean of its divisors is an integer number (5161827676656).

Almost surely, 2^{91438090269216} is an apocalyptic number.

91438090269216 is a gapful number since it is divisible by the number (96) formed by its first and last digit.

It is an amenable number.

91438090269216 is an abundant number, since it is smaller than the sum of its proper divisors (156329638210272).

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

91438090269216 is a wasteful number, since it uses less digits than its factorization.

91438090269216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30725164785 (or 30725164777 counting only the distinct ones).

The product of its (nonzero) digits is 10077696, while the sum is 60.

The spelling of 91438090269216 in words is "ninety-one trillion, four hundred thirty-eight billion, ninety million, two hundred sixty-nine thousand, two hundred sixteen".