2542650978 has 16 divisors (see below), whose sum is σ = 5811773760. Its totient is φ = 726471696.

The previous prime is 2542650959. The next prime is 2542650997. The reversal of 2542650978 is 8790562452.

2542650978 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (2542650959) and next prime (2542650997).

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, 30269613 + ... + 30269696.

It is an arithmetic number, because the mean of its divisors is an integer number (363235860).

Almost surely, 2^2542650978 is an apocalyptic number.

2542650978 is an abundant number, since it is smaller than the sum of its proper divisors (3269122782).

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

2542650978 is a wasteful number, since it uses less digits than its factorization.

2542650978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60539321.

The product of its (nonzero) digits is 1209600, while the sum is 48.

The square root of 2542650978 is about 50424.7060278987. The cubic root of 2542650978 is about 1364.8834990267.

The spelling of 2542650978 in words is "two billion, five hundred forty-two million, six hundred fifty thousand, nine hundred seventy-eight".