21326492132 has 24 divisors (see below), whose sum is σ = 41482409472. Its totient is φ = 9510956000.

The previous prime is 21326492113. The next prime is 21326492137. The reversal of 21326492132 is 23129462312.

It is a junction number, because it is equal to n+sod(n) for n = 21326492092 and 21326492101.

It is not an unprimeable number, because it can be changed into a prime (21326492137) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4570244 + ... + 4574907.

It is an arithmetic number, because the mean of its divisors is an integer number (1728433728).

Almost surely, 2^21326492132 is an apocalyptic number.

21326492132 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

21326492132 is a deficient number, since it is larger than the sum of its proper divisors (20155917340).

21326492132 is a wasteful number, since it uses less digits than its factorization.

21326492132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9145219 (or 9145217 counting only the distinct ones).

The product of its digits is 31104, while the sum is 35.

The spelling of 21326492132 in words is "twenty-one billion, three hundred twenty-six million, four hundred ninety-two thousand, one hundred thirty-two".