42455642490657 has 48 divisors (see below), whose sum is σ = 67451055609600. Its totient is φ = 25519429766880.

The previous prime is 42455642490649. The next prime is 42455642490659. The reversal of 42455642490657 is 75609424655424.

42455642490657 is a `hidden beast` number, since 4 + 2 + 4 + 5 + 56 + 42 + 490 + 6 + 57 = 666.

It is not a de Polignac number, because 42455642490657 - 2³ = 42455642490649 is a prime.

It is a super-2 number, since 2×42455642490657² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 42455642490594 and 42455642490603.

It is not an unprimeable number, because it can be changed into a prime (42455642490659) 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, 3555598 + ... + 9876920.

It is an arithmetic number, because the mean of its divisors is an integer number (1405230325200).

Almost surely, 2^{42455642490657} is an apocalyptic number.

It is an amenable number.

42455642490657 is a deficient number, since it is larger than the sum of its proper divisors (24995413118943).

42455642490657 is a wasteful number, since it uses less digits than its factorization.

42455642490657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6321898 (or 6321895 counting only the distinct ones).

The product of its (nonzero) digits is 290304000, while the sum is 63.

The spelling of 42455642490657 in words is "forty-two trillion, four hundred fifty-five billion, six hundred forty-two million, four hundred ninety thousand, six hundred fifty-seven".