2542421065563 has 32 divisors (see below), whose sum is σ = 3772165320000. Its totient is φ = 1692421226496.

The previous prime is 2542421065469. The next prime is 2542421065577. The reversal of 2542421065563 is 3655601242452.

2542421065563 is a `hidden beast` number, since 2 + 5 + 4 + 2 + 4 + 21 + 0 + 65 + 563 = 666.

It is not a de Polignac number, because 2542421065563 - 2²⁹ = 2541884194651 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2542421061563) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 166283223 + ... + 166298511.

It is an arithmetic number, because the mean of its divisors is an integer number (117880166250).

Almost surely, 2^{2542421065563} is an apocalyptic number.

2542421065563 is a deficient number, since it is larger than the sum of its proper divisors (1229744254437).

2542421065563 is a wasteful number, since it uses less digits than its factorization.

2542421065563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24076 (or 24070 counting only the distinct ones).

The product of its (nonzero) digits is 1728000, while the sum is 45.

The spelling of 2542421065563 in words is "two trillion, five hundred forty-two billion, four hundred twenty-one million, sixty-five thousand, five hundred sixty-three".