21532760694 has 48 divisors (see below), whose sum is σ = 49713438528. Its totient is φ = 6712333056.

The previous prime is 21532760693. The next prime is 21532760699. The reversal of 21532760694 is 49606723512.

21532760694 is a `hidden beast` number, since 2 + 1 + 5 + 32 + 7 + 606 + 9 + 4 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21532760693) 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, 176062 + ... + 272145.

It is an arithmetic number, because the mean of its divisors is an integer number (1035696636).

Almost surely, 2^21532760694 is an apocalyptic number.

21532760694 is an abundant number, since it is smaller than the sum of its proper divisors (28180677834).

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

21532760694 is a wasteful number, since it uses less digits than its factorization.

21532760694 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 448389 (or 448386 counting only the distinct ones).

The product of its (nonzero) digits is 544320, while the sum is 45.

The spelling of 21532760694 in words is "twenty-one billion, five hundred thirty-two million, seven hundred sixty thousand, six hundred ninety-four".