2516930640 has 120 divisors (see below), whose sum is σ = 9660238848. Its totient is φ = 575297280.

The previous prime is 2516930629. The next prime is 2516930659. The reversal of 2516930640 is 460396152.

It is a happy number.

2516930640 is a `hidden beast` number, since 2 + 5 + 1 + 6 + 9 + 3 + 0 + 640 = 666.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 2516930595 and 2516930604.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 244656 + ... + 254735.

Almost surely, 2^2516930640 is an apocalyptic number.

2516930640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2516930640 is an abundant number, since it is smaller than the sum of its proper divisors (7143308208).

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

2516930640 is a wasteful number, since it uses less digits than its factorization.

2516930640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 499417 (or 499408 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 36.

The square root of 2516930640 is about 50169.0207199622. The cubic root of 2516930640 is about 1360.2657064471.

It can be divided in two parts, 2516 and 930640, that added together give a square (933156 = 966²).

The spelling of 2516930640 in words is "two billion, five hundred sixteen million, nine hundred thirty thousand, six hundred forty".