21150165022443 has 12 divisors (see below), whose sum is σ = 30550334652240. Its totient is φ = 14100065575056.

The previous prime is 21150165022433. The next prime is 21150165022529. The reversal of 21150165022443 is 34422056105112.

21150165022443 is a `hidden beast` number, since 2 + 1 + 1 + 50 + 165 + 0 + 2 + 2 + 443 = 666.

It is not a de Polignac number, because 21150165022443 - 2¹⁴ = 21150165006059 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21150165022398 and 21150165022407.

It is not an unprimeable number, because it can be changed into a prime (21150165022433) 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 11 ways as a sum of consecutive naturals, for example, 547588 + ... + 6526881.

It is an arithmetic number, because the mean of its divisors is an integer number (2545861221020).

Almost surely, 2^{21150165022443} is an apocalyptic number.

21150165022443 is a deficient number, since it is larger than the sum of its proper divisors (9400169629797).

21150165022443 is a wasteful number, since it uses less digits than its factorization.

21150165022443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7406658 (or 7406655 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 36.

The spelling of 21150165022443 in words is "twenty-one trillion, one hundred fifty billion, one hundred sixty-five million, twenty-two thousand, four hundred forty-three".