2159340865920 has 768 divisors, whose sum is σ = 8784478010880. Its totient is φ = 478513889280.

The previous prime is 2159340865823. The next prime is 2159340865931. The reversal of 2159340865920 is 295680439512.

2159340865920 is a `hidden beast` number, since 2 + 1 + 5 + 9 + 3 + 40 + 8 + 6 + 592 + 0 = 666.

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

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, 237520575 + ... + 237529665.

It is an arithmetic number, because the mean of its divisors is an integer number (11438122410).

Almost surely, 2^{2159340865920} is an apocalyptic number.

2159340865920 is a gapful number since it is divisible by the number (20) 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 2159340865920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4392239005440).

2159340865920 is an abundant number, since it is smaller than the sum of its proper divisors (6625137144960).

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

2159340865920 is a wasteful number, since it uses less digits than its factorization.

2159340865920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9303 (or 9288 counting only the distinct ones).

The product of its (nonzero) digits is 4665600, while the sum is 54.

The spelling of 2159340865920 in words is "two trillion, one hundred fifty-nine billion, three hundred forty million, eight hundred sixty-five thousand, nine hundred twenty".