2516205656 has 8 divisors (see below), whose sum is σ = 4717885620. Its totient is φ = 1258102824.

The previous prime is 2516205631. The next prime is 2516205719. The reversal of 2516205656 is 6565026152.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157262846 + ... + 157262861.

Almost surely, 2^2516205656 is an apocalyptic number.

It is an amenable number.

2516205656 is a deficient number, since it is larger than the sum of its proper divisors (2201679964).

2516205656 is a wasteful number, since it uses less digits than its factorization.

2516205656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 314525713 (or 314525709 counting only the distinct ones).

The product of its (nonzero) digits is 108000, while the sum is 38.

The square root of 2516205656 is about 50161.7947844772. The cubic root of 2516205656 is about 1360.1350889456.

The spelling of 2516205656 in words is "two billion, five hundred sixteen million, two hundred five thousand, six hundred fifty-six".