2521316878 has 8 divisors (see below), whose sum is σ = 3803836968. Its totient is φ = 1253371224.

The previous prime is 2521316873. The next prime is 2521316887. The reversal of 2521316878 is 8786131252.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2521316873) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3643176 + ... + 3643867.

It is an arithmetic number, because the mean of its divisors is an integer number (475479621).

Almost surely, 2^2521316878 is an apocalyptic number.

2521316878 is a deficient number, since it is larger than the sum of its proper divisors (1282520090).

2521316878 is a wasteful number, since it uses less digits than its factorization.

2521316878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7287218.

The product of its digits is 161280, while the sum is 43.

The square root of 2521316878 is about 50212.7162977666. The cubic root of 2521316878 is about 1361.0554231615.

The spelling of 2521316878 in words is "two billion, five hundred twenty-one million, three hundred sixteen thousand, eight hundred seventy-eight".