21350624245233 has 16 divisors (see below), whose sum is σ = 30154497906816. Its totient is φ = 13390941159680.

The previous prime is 21350624245229. The next prime is 21350624245289. The reversal of 21350624245233 is 33254242605312.

It is a cyclic number.

It is not a de Polignac number, because 21350624245233 - 2² = 21350624245229 is a prime.

It is a super-2 number, since 2×21350624245233² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21350624245133) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 86265138 + ... + 86512283.

It is an arithmetic number, because the mean of its divisors is an integer number (1884656119176).

Almost surely, 2^{21350624245233} is an apocalyptic number.

It is an amenable number.

21350624245233 is a deficient number, since it is larger than the sum of its proper divisors (8803873661583).

21350624245233 is a wasteful number, since it uses less digits than its factorization.

21350624245233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172779864.

The product of its (nonzero) digits is 1036800, while the sum is 42.

The spelling of 21350624245233 in words is "twenty-one trillion, three hundred fifty billion, six hundred twenty-four million, two hundred forty-five thousand, two hundred thirty-three".