2613756440 has 16 divisors (see below), whose sum is σ = 5880952080. Its totient is φ = 1045502560.

The previous prime is 2613756401. The next prime is 2613756469. The reversal of 2613756440 is 446573162.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 2613756394 and 2613756403.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32671916 + ... + 32671995.

It is an arithmetic number, because the mean of its divisors is an integer number (367559505).

Almost surely, 2^2613756440 is an apocalyptic number.

2613756440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2613756440 is an abundant number, since it is smaller than the sum of its proper divisors (3267195640).

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

2613756440 is a wasteful number, since it uses less digits than its factorization.

2613756440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65343922 (or 65343918 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 38.

The square root of 2613756440 is about 51124.9101710702. The cubic root of 2613756440 is about 1377.4897374409.

The spelling of 2613756440 in words is "two billion, six hundred thirteen million, seven hundred fifty-six thousand, four hundred forty".