2421943522865 has 16 divisors (see below), whose sum is σ = 3028123077120. Its totient is φ = 1857529176960.

The previous prime is 2421943522861. The next prime is 2421943522883. The reversal of 2421943522865 is 5682253491242.

2421943522865 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 2421943522865 - 2² = 2421943522861 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2421943522861) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 72999500 + ... + 73032669.

It is an arithmetic number, because the mean of its divisors is an integer number (189257692320).

Almost surely, 2^{2421943522865} is an apocalyptic number.

It is an amenable number.

2421943522865 is a deficient number, since it is larger than the sum of its proper divisors (606179554255).

2421943522865 is a wasteful number, since it uses less digits than its factorization.

2421943522865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146032312.

The product of its digits is 8294400, while the sum is 53.

The spelling of 2421943522865 in words is "two trillion, four hundred twenty-one billion, nine hundred forty-three million, five hundred twenty-two thousand, eight hundred sixty-five".