21346365432 has 64 divisors (see below), whose sum is σ = 61296192000. Its totient is φ = 6068304000.

The previous prime is 21346365421. The next prime is 21346365433. The reversal of 21346365432 is 23456364312.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21346365433) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 285819 + ... + 352682.

It is an arithmetic number, because the mean of its divisors is an integer number (957753000).

Almost surely, 2^21346365432 is an apocalyptic number.

It is an amenable number.

21346365432 is an abundant number, since it is smaller than the sum of its proper divisors (39949826568).

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

21346365432 is a wasteful number, since it uses less digits than its factorization.

21346365432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 638716 (or 638712 counting only the distinct ones).

The product of its digits is 311040, while the sum is 39.

The spelling of 21346365432 in words is "twenty-one billion, three hundred forty-six million, three hundred sixty-five thousand, four hundred thirty-two".