8130091251920 has 160 divisors (see below), whose sum is σ = 21041803309824. Its totient is φ = 2896584192000.

The previous prime is 8130091251871. The next prime is 8130091251949. The reversal of 8130091251920 is 291521900318.

It is a super-2 number, since 2×8130091251920² (a number of 27 digits) contains 22 as substring.

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, 9281174 + ... + 10119306.

Almost surely, 2^{8130091251920} is an apocalyptic number.

8130091251920 is a gapful number since it is divisible by the number (80) 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 8130091251920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10520901654912).

8130091251920 is an abundant number, since it is smaller than the sum of its proper divisors (12911712057904).

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

8130091251920 is a wasteful number, since it uses less digits than its factorization.

8130091251920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 838381 (or 838375 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 41.

The spelling of 8130091251920 in words is "eight trillion, one hundred thirty billion, ninety-one million, two hundred fifty-one thousand, nine hundred twenty".