21428674895532 has 24 divisors (see below), whose sum is σ = 50018671370416. Its totient is φ = 7140258782208.

The previous prime is 21428674895497. The next prime is 21428674895561. The reversal of 21428674895532 is 23559847682412.

It is a super-2 number, since 2×21428674895532² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 329072293 + ... + 329137404.

Almost surely, 2^{21428674895532} is an apocalyptic number.

It is an amenable number.

21428674895532 is an abundant number, since it is smaller than the sum of its proper divisors (28589996474884).

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

21428674895532 is a wasteful number, since it uses less digits than its factorization.

21428674895532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 658212417 (or 658212415 counting only the distinct ones).

The product of its digits is 232243200, while the sum is 66.

The spelling of 21428674895532 in words is "twenty-one trillion, four hundred twenty-eight billion, six hundred seventy-four million, eight hundred ninety-five thousand, five hundred thirty-two".