42521866812524 has 24 divisors (see below), whose sum is σ = 81586039584000. Its totient is φ = 19230995036880.

The previous prime is 42521866812449. The next prime is 42521866812539.

42521866812524 is nontrivially palindromic in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 42521866812524.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2428147184 + ... + 2428164695.

It is an arithmetic number, because the mean of its divisors is an integer number (3399418316000).

Almost surely, 2^{42521866812524} is an apocalyptic number.

42521866812524 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

42521866812524 is a deficient number, since it is larger than the sum of its proper divisors (39064172771476).

42521866812524 is a wasteful number, since it uses less digits than its factorization.

42521866812524 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4856312093 (or 4856312091 counting only the distinct ones).

The product of its digits is 14745600, while the sum is 56.

The spelling of 42521866812524 in words is "forty-two trillion, five hundred twenty-one billion, eight hundred sixty-six million, eight hundred twelve thousand, five hundred twenty-four".