21160384432 has 40 divisors (see below), whose sum is σ = 47356268112. Its totient is φ = 9052569600.

The previous prime is 21160384429. The next prime is 21160384433. The reversal of 21160384432 is 23448306112.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is not an unprimeable number, because it can be changed into a prime (21160384433) 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, 3533169 + ... + 3539152.

Almost surely, 2^21160384432 is an apocalyptic number.

21160384432 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

21160384432 is an abundant number, since it is smaller than the sum of its proper divisors (26195883680).

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

21160384432 is a wasteful number, since it uses less digits than its factorization.

21160384432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7072357 (or 7072351 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 34.

The spelling of 21160384432 in words is "twenty-one billion, one hundred sixty million, three hundred eighty-four thousand, four hundred thirty-two".