2469661978956 has 12 divisors (see below), whose sum is σ = 5762544617592. Its totient is φ = 823220659648.

The previous prime is 2469661978933. The next prime is 2469661979063. The reversal of 2469661978956 is 6598791669642.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 102902582445 + ... + 102902582468.

It is an arithmetic number, because the mean of its divisors is an integer number (480212051466).

Almost surely, 2^{2469661978956} is an apocalyptic number.

It is an amenable number.

2469661978956 is an abundant number, since it is smaller than the sum of its proper divisors (3292882638636).

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

2469661978956 is a wasteful number, since it uses less digits than its factorization.

2469661978956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 205805164920 (or 205805164918 counting only the distinct ones).

The product of its digits is 2116316160, while the sum is 78.

The spelling of 2469661978956 in words is "two trillion, four hundred sixty-nine billion, six hundred sixty-one million, nine hundred seventy-eight thousand, nine hundred fifty-six".