21624070344 has 32 divisors (see below), whose sum is σ = 54711508320. Its totient is φ = 7121179136.

The previous prime is 21624070343. The next prime is 21624070399. The reversal of 21624070344 is 44307042612.

It is not an unprimeable number, because it can be changed into a prime (21624070343) 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, 5425737 + ... + 5429720.

It is an arithmetic number, because the mean of its divisors is an integer number (1709734635).

Almost surely, 2^21624070344 is an apocalyptic number.

21624070344 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

21624070344 is an abundant number, since it is smaller than the sum of its proper divisors (33087437976).

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

21624070344 is a wasteful number, since it uses less digits than its factorization.

21624070344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10855549 (or 10855545 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 33.

The spelling of 21624070344 in words is "twenty-one billion, six hundred twenty-four million, seventy thousand, three hundred forty-four".