21446835132 has 24 divisors (see below), whose sum is σ = 50645540736. Its totient is φ = 7062812848.

The previous prime is 21446835107. The next prime is 21446835133. The reversal of 21446835132 is 23153864412.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21446835133) 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, 10765488 + ... + 10767479.

It is an arithmetic number, because the mean of its divisors is an integer number (2110230864).

Almost surely, 2^21446835132 is an apocalyptic number.

It is an amenable number.

21446835132 is an abundant number, since it is smaller than the sum of its proper divisors (29198705604).

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

21446835132 is a wasteful number, since it uses less digits than its factorization.

21446835132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21533057 (or 21533055 counting only the distinct ones).

The product of its digits is 138240, while the sum is 39.

The spelling of 21446835132 in words is "twenty-one billion, four hundred forty-six million, eight hundred thirty-five thousand, one hundred thirty-two".