2515014978 has 16 divisors (see below), whose sum is σ = 5748605760. Its totient is φ = 718575696.

The previous prime is 2515014967. The next prime is 2515015031. The reversal of 2515014978 is 8794105152.

It is a Harshad number since it is a multiple of its sum of digits (42), and also a Moran number because the ratio is a prime number: 59881309 = 2515014978 / (2 + 5 + 1 + 5 + 0 + 1 + 4 + 9 + 7 + 8).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29940613 + ... + 29940696.

It is an arithmetic number, because the mean of its divisors is an integer number (359287860).

Almost surely, 2^2515014978 is an apocalyptic number.

2515014978 is an abundant number, since it is smaller than the sum of its proper divisors (3233590782).

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

2515014978 is a wasteful number, since it uses less digits than its factorization.

2515014978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59881321.

The product of its (nonzero) digits is 100800, while the sum is 42.

The square root of 2515014978 is about 50149.9250049290. The cubic root of 2515014978 is about 1359.9205147462.

The spelling of 2515014978 in words is "two billion, five hundred fifteen million, fourteen thousand, nine hundred seventy-eight".