21360758874 has 32 divisors (see below), whose sum is σ = 52580330880. Its totient is φ = 5633606592.

The previous prime is 21360758849. The next prime is 21360758891. The reversal of 21360758874 is 47885706312.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19560589 + ... + 19561680.

It is an arithmetic number, because the mean of its divisors is an integer number (1643135340).

Almost surely, 2^21360758874 is an apocalyptic number.

21360758874 is an abundant number, since it is smaller than the sum of its proper divisors (31219572006).

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

21360758874 is a wasteful number, since it uses less digits than its factorization.

21360758874 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39122294.

The product of its (nonzero) digits is 2257920, while the sum is 51.

The spelling of 21360758874 in words is "twenty-one billion, three hundred sixty million, seven hundred fifty-eight thousand, eight hundred seventy-four".