21364715122750 has 64 divisors (see below), whose sum is σ = 41040035854272. Its totient is φ = 8323243968000.

The previous prime is 21364715122721. The next prime is 21364715122841. The reversal of 21364715122750 is 5722151746312.

It is a self number, because there is not a number n which added to its sum of digits gives 21364715122750.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4241314 + ... + 7792186.

It is an arithmetic number, because the mean of its divisors is an integer number (641250560223).

Almost surely, 2^{21364715122750} is an apocalyptic number.

21364715122750 is a deficient number, since it is larger than the sum of its proper divisors (19675320731522).

21364715122750 is a wasteful number, since it uses less digits than its factorization.

21364715122750 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3551518 (or 3551508 counting only the distinct ones).

The product of its (nonzero) digits is 705600, while the sum is 46.

The spelling of 21364715122750 in words is "twenty-one trillion, three hundred sixty-four billion, seven hundred fifteen million, one hundred twenty-two thousand, seven hundred fifty".