2611539960 has 128 divisors (see below), whose sum is σ = 8112199680. Its totient is φ = 672150528.

The previous prime is 2611539947. The next prime is 2611539961. The reversal of 2611539960 is 699351162.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2611539961) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 408549 + ... + 414891.

It is an arithmetic number, because the mean of its divisors is an integer number (63376560).

Almost surely, 2^2611539960 is an apocalyptic number.

2611539960 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 2611539960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4056099840).

2611539960 is an abundant number, since it is smaller than the sum of its proper divisors (5500659720).

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

2611539960 is a wasteful number, since it uses less digits than its factorization.

2611539960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6477 (or 6473 counting only the distinct ones).

The product of its (nonzero) digits is 87480, while the sum is 42.

The square root of 2611539960 is about 51103.2284694421. The cubic root of 2611539960 is about 1377.1002543390.

The spelling of 2611539960 in words is "two billion, six hundred eleven million, five hundred thirty-nine thousand, nine hundred sixty".