21923558346 has 16 divisors (see below), whose sum is σ = 43858118304. Its totient is φ = 7306019184.

The previous prime is 21923558333. The next prime is 21923558351. The reversal of 21923558346 is 64385532912.

It is a junction number, because it is equal to n+sod(n) for n = 21923558295 and 21923558304.

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, 432381 + ... + 480416.

It is an arithmetic number, because the mean of its divisors is an integer number (2741132394).

Almost surely, 2^21923558346 is an apocalyptic number.

21923558346 is an abundant number, since it is smaller than the sum of its proper divisors (21934559958).

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

21923558346 is a wasteful number, since it uses less digits than its factorization.

21923558346 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 916805.

The product of its digits is 1555200, while the sum is 48.

The spelling of 21923558346 in words is "twenty-one billion, nine hundred twenty-three million, five hundred fifty-eight thousand, three hundred forty-six".