91369930970880 has 288 divisors, whose sum is σ = 324334450406400. Its totient is φ = 24357943185408.

The previous prime is 91369930970873. The next prime is 91369930970893. The reversal of 91369930970880 is 8807903996319.

It is a happy number.

91369930970880 is a `hidden beast` number, since 91 + 3 + 6 + 99 + 309 + 70 + 8 + 80 = 666.

It is a tau number, because it is divible by the number of its divisors (288).

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a junction number, because it is equal to n+sod(n) for n = 91369930970799 and 91369930970808.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 114306357 + ... + 115102923.

Almost surely, 2^{91369930970880} is an apocalyptic number.

91369930970880 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 91369930970880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (162167225203200).

91369930970880 is an abundant number, since it is smaller than the sum of its proper divisors (232964519435520).

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

91369930970880 is a wasteful number, since it uses less digits than its factorization.

91369930970880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 799916 (or 799896 counting only the distinct ones).

The product of its (nonzero) digits is 158723712, while the sum is 72.

The spelling of 91369930970880 in words is "ninety-one trillion, three hundred sixty-nine billion, nine hundred thirty million, nine hundred seventy thousand, eight hundred eighty".