2591215960 has 16 divisors (see below), whose sum is σ = 5830236000. Its totient is φ = 1036486368.

The previous prime is 2591215943. The next prime is 2591215967. The reversal of 2591215960 is 695121952.

It is a Harshad number since it is a multiple of its sum of digits (40), and also a Moran number because the ratio is a prime number: 64780399 = 2591215960 / (2 + 5 + 9 + 1 + 2 + 1 + 5 + 9 + 6 + 0).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2591215967) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32390160 + ... + 32390239.

It is an arithmetic number, because the mean of its divisors is an integer number (364389750).

Almost surely, 2^2591215960 is an apocalyptic number.

2591215960 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2591215960 is an abundant number, since it is smaller than the sum of its proper divisors (3239020040).

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

2591215960 is a wasteful number, since it uses less digits than its factorization.

2591215960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64780410 (or 64780406 counting only the distinct ones).

The product of its (nonzero) digits is 48600, while the sum is 40.

The square root of 2591215960 is about 50903.9876630505. The cubic root of 2591215960 is about 1373.5185737394.

The spelling of 2591215960 in words is "two billion, five hundred ninety-one million, two hundred fifteen thousand, nine hundred sixty".