21623057706324 has 24 divisors (see below), whose sum is σ = 51206843127328. Its totient is φ = 7100108500320.

The previous prime is 21623057706317. The next prime is 21623057706353. The reversal of 21623057706324 is 42360775032612.

It is a congruent number.

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, 13447174387 + ... + 13447175994.

Almost surely, 2^{21623057706324} is an apocalyptic number.

It is an amenable number.

21623057706324 is an abundant number, since it is smaller than the sum of its proper divisors (29583785421004).

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

21623057706324 is a wasteful number, since it uses less digits than its factorization.

21623057706324 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26894350455 (or 26894350453 counting only the distinct ones).

The product of its (nonzero) digits is 2540160, while the sum is 48.

The spelling of 21623057706324 in words is "twenty-one trillion, six hundred twenty-three billion, fifty-seven million, seven hundred six thousand, three hundred twenty-four".