2456542647 has 28 divisors (see below), whose sum is σ = 3966462024. Its totient is φ = 1511712720.

The previous prime is 2456542609. The next prime is 2456542663. The reversal of 2456542647 is 7462456542.

2456542647 is a `hidden beast` number, since 2 + 4 + 565 + 42 + 6 + 47 = 666.

It is not a de Polignac number, because 2456542647 - 2¹⁴ = 2456526263 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2456542607) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 120129 + ... + 139082.

It is an arithmetic number, because the mean of its divisors is an integer number (141659358).

Almost surely, 2^2456542647 is an apocalyptic number.

2456542647 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

2456542647 is a deficient number, since it is larger than the sum of its proper divisors (1509919377).

2456542647 is an equidigital number, since it uses as much as digits as its factorization.

2456542647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 259242 (or 259227 counting only the distinct ones).

The product of its digits is 1612800, while the sum is 45.

The square root of 2456542647 is about 49563.5213337390. The cubic root of 2456542647 is about 1349.2987024199.

The spelling of 2456542647 in words is "two billion, four hundred fifty-six million, five hundred forty-two thousand, six hundred forty-seven".