2494780388865 has 48 divisors (see below), whose sum is σ = 4328182010880. Its totient is φ = 1329351390720.

The previous prime is 2494780388861. The next prime is 2494780388879. The reversal of 2494780388865 is 5688830874942.

2494780388865 is a `hidden beast` number, since 2 + 4 + 94 + 7 + 80 + 388 + 86 + 5 = 666.

2494780388865 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2494780388865 - 2² = 2494780388861 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2494780388793 and 2494780388802.

It is not an unprimeable number, because it can be changed into a prime (2494780388861) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 371298976 + ... + 371305694.

It is an arithmetic number, because the mean of its divisors is an integer number (90170458560).

Almost surely, 2^{2494780388865} is an apocalyptic number.

It is an amenable number.

2494780388865 is a deficient number, since it is larger than the sum of its proper divisors (1833401622015).

2494780388865 is a wasteful number, since it uses less digits than its factorization.

2494780388865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12934 (or 12931 counting only the distinct ones).

The product of its (nonzero) digits is 743178240, while the sum is 72.

The spelling of 2494780388865 in words is "two trillion, four hundred ninety-four billion, seven hundred eighty million, three hundred eighty-eight thousand, eight hundred sixty-five".