21534523511332 has 12 divisors (see below), whose sum is σ = 40584294309916. Its totient is φ = 9939010851360.

The previous prime is 21534523511317. The next prime is 21534523511399. The reversal of 21534523511332 is 23311532543512.

It can be written as a sum of positive squares in 2 ways, for example, as 5496933458916 + 16037590052416 = 2344554^2 + 4004696^2 .

It is a super-2 number, since 2×21534523511332² (a number of 27 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 207062726019 + ... + 207062726122.

Almost surely, 2^{21534523511332} is an apocalyptic number.

It is an amenable number.

21534523511332 is a deficient number, since it is larger than the sum of its proper divisors (19049770798584).

21534523511332 is a wasteful number, since it uses less digits than its factorization.

21534523511332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 414125452158 (or 414125452156 counting only the distinct ones).

The product of its digits is 324000, while the sum is 40.

The spelling of 21534523511332 in words is "twenty-one trillion, five hundred thirty-four billion, five hundred twenty-three million, five hundred eleven thousand, three hundred thirty-two".