2159731470440 has 64 divisors (see below), whose sum is σ = 5115547353600. Its totient is φ = 819019328512.

The previous prime is 2159731470359. The next prime is 2159731470443. The reversal of 2159731470440 is 440741379512.

It is not an unprimeable number, because it can be changed into a prime (2159731470443) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10283360 + ... + 10491279.

It is an arithmetic number, because the mean of its divisors is an integer number (79930427400).

Almost surely, 2^{2159731470440} is an apocalyptic number.

2159731470440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2159731470440 is an abundant number, since it is smaller than the sum of its proper divisors (2955815883160).

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

2159731470440 is a wasteful number, since it uses less digits than its factorization.

2159731470440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20774786 (or 20774782 counting only the distinct ones).

The product of its (nonzero) digits is 846720, while the sum is 47.

The spelling of 2159731470440 in words is "two trillion, one hundred fifty-nine billion, seven hundred thirty-one million, four hundred seventy thousand, four hundred forty".