2456978783 has 4 divisors (see below), whose sum is σ = 2807975760. Its totient is φ = 2105981808.

The previous prime is 2456978759. The next prime is 2456978827. The reversal of 2456978783 is 3878796542.

It is a happy number.

2456978783 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 2456978783 - 2¹⁶ = 2456913247 is a prime.

It is a super-2 number, since 2×2456978783² = 12073489480224322178, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2456978723) 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, 175498478 + ... + 175498491.

It is an arithmetic number, because the mean of its divisors is an integer number (701993940).

Almost surely, 2^2456978783 is an apocalyptic number.

2456978783 is a deficient number, since it is larger than the sum of its proper divisors (350996977).

2456978783 is an equidigital number, since it uses as much as digits as its factorization.

2456978783 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 350996976.

The product of its digits is 20321280, while the sum is 59.

The square root of 2456978783 is about 49567.9209065702. The cubic root of 2456978783 is about 1349.3785494516.

The spelling of 2456978783 in words is "two billion, four hundred fifty-six million, nine hundred seventy-eight thousand, seven hundred eighty-three".