21374522793 has 48 divisors (see below), whose sum is σ = 34202435904. Its totient is φ = 12781687680.

The previous prime is 21374522791. The next prime is 21374522801. The reversal of 21374522793 is 39722547312.

21374522793 is a `hidden beast` number, since 2 + 1 + 37 + 4 + 522 + 7 + 93 = 666.

It is not a de Polignac number, because 21374522793 - 2¹ = 21374522791 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (21374522791) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 574330 + ... + 610412.

It is an arithmetic number, because the mean of its divisors is an integer number (712550748).

Almost surely, 2^21374522793 is an apocalyptic number.

It is an amenable number.

21374522793 is a deficient number, since it is larger than the sum of its proper divisors (12827913111).

21374522793 is a wasteful number, since it uses less digits than its factorization.

21374522793 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36246 (or 36243 counting only the distinct ones).

The product of its digits is 635040, while the sum is 45.

The spelling of 21374522793 in words is "twenty-one billion, three hundred seventy-four million, five hundred twenty-two thousand, seven hundred ninety-three".