2515287680 has 64 divisors (see below), whose sum is σ = 6159835080. Its totient is φ = 981565440.

The previous prime is 2515287667. The next prime is 2515287757. The reversal of 2515287680 is 867825152.

It can be written as a sum of positive squares in 4 ways, for example, as 758671936 + 1756615744 = 27544^2 + 41912^2 .

It is a tau number, because it is divible by the number of its divisors (64).

It is a super-2 number, since 2×2515287680² = 12653344226319564800, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21689 + ... + 74168.

Almost surely, 2^2515287680 is an apocalyptic number.

2515287680 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2515287680 is an abundant number, since it is smaller than the sum of its proper divisors (3644547400).

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

2515287680 is an equidigital number, since it uses as much as digits as its factorization.

2515287680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95917 (or 95905 counting only the distinct ones).

The product of its (nonzero) digits is 268800, while the sum is 44.

The square root of 2515287680 is about 50152.6437987072. The cubic root of 2515287680 is about 1359.9696648366.

The spelling of 2515287680 in words is "two billion, five hundred fifteen million, two hundred eighty-seven thousand, six hundred eighty".