21534350214533 has 64 divisors (see below), whose sum is σ = 24752504448000. Its totient is φ = 18598703984640.

The previous prime is 21534350214511. The next prime is 21534350214539. The reversal of 21534350214533 is 33541205343512.

It is not a de Polignac number, because 21534350214533 - 2⁶ = 21534350214469 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21534350214539) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 462593543 + ... + 462640091.

It is an arithmetic number, because the mean of its divisors is an integer number (386757882000).

Almost surely, 2^{21534350214533} is an apocalyptic number.

It is an amenable number.

21534350214533 is a deficient number, since it is larger than the sum of its proper divisors (3218154233467).

21534350214533 is a wasteful number, since it uses less digits than its factorization.

21534350214533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47022.

The product of its (nonzero) digits is 648000, while the sum is 41.

The spelling of 21534350214533 in words is "twenty-one trillion, five hundred thirty-four billion, three hundred fifty million, two hundred fourteen thousand, five hundred thirty-three".