9615072158640 has 480 divisors, whose sum is σ = 37286196030720. Its totient is φ = 2199364337664.

The previous prime is 9615072158621. The next prime is 9615072158669. The reversal of 9615072158640 is 468512705169.

It is a happy number.

9615072158640 is a `hidden beast` number, since 9 + 6 + 1 + 50 + 7 + 2 + 1 + 586 + 4 + 0 = 666.

It is a super-2 number, since 2×9615072158640² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 12188034 + ... + 12952926.

It is an arithmetic number, because the mean of its divisors is an integer number (77679575064).

Almost surely, 2^{9615072158640} is an apocalyptic number.

9615072158640 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 9615072158640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18643098015360).

9615072158640 is an abundant number, since it is smaller than the sum of its proper divisors (27671123872080).

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

9615072158640 is a wasteful number, since it uses less digits than its factorization.

9615072158640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 765021 (or 765012 counting only the distinct ones).

The product of its (nonzero) digits is 3628800, while the sum is 54.

The spelling of 9615072158640 in words is "nine trillion, six hundred fifteen billion, seventy-two million, one hundred fifty-eight thousand, six hundred forty".