91909675002240 has 512 divisors, whose sum is σ = 344715716822400. Its totient is φ = 23063883153408.

The previous prime is 91909675002179. The next prime is 91909675002251. The reversal of 91909675002240 is 4220057690919.

91909675002240 is a `hidden beast` number, since 9 + 1 + 9 + 0 + 96 + 7 + 500 + 2 + 2 + 40 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2190547342 + ... + 2190589298.

Almost surely, 2^{91909675002240} is an apocalyptic number.

91909675002240 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 91909675002240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (172357858411200).

91909675002240 is an abundant number, since it is smaller than the sum of its proper divisors (252806041820160).

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

91909675002240 is a wasteful number, since it uses less digits than its factorization.

91909675002240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49459 (or 49441 counting only the distinct ones).

The product of its (nonzero) digits is 2449440, while the sum is 54.

The spelling of 91909675002240 in words is "ninety-one trillion, nine hundred nine billion, six hundred seventy-five million, two thousand, two hundred forty".