21419774532 has 72 divisors (see below), whose sum is σ = 58654628760. Its totient is φ = 6590675520.

The previous prime is 21419774527. The next prime is 21419774533. The reversal of 21419774532 is 23547791412.

21419774532 is a `hidden beast` number, since 2 + 1 + 4 + 197 + 7 + 453 + 2 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 11897137476 + 9522637056 = 109074^2 + 97584^2 .

It is not an unprimeable number, because it can be changed into a prime (21419774533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 56319 + ... + 214502.

Almost surely, 2^21419774532 is an apocalyptic number.

It is an amenable number.

21419774532 is an abundant number, since it is smaller than the sum of its proper divisors (37234854228).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21419774532 is a wasteful number, since it uses less digits than its factorization.

21419774532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 270870 (or 270839 counting only the distinct ones).

The product of its digits is 423360, while the sum is 45.

The spelling of 21419774532 in words is "twenty-one billion, four hundred nineteen million, seven hundred seventy-four thousand, five hundred thirty-two".