21407316457023 has 36 divisors (see below), whose sum is σ = 36106885468368. Its totient is φ = 12186239829120.

The previous prime is 21407316456979. The next prime is 21407316457091. The reversal of 21407316457023 is 32075461370412.

It is a happy number.

21407316457023 is a `hidden beast` number, since 2 + 1 + 4 + 0 + 73 + 1 + 6 + 4 + 570 + 2 + 3 = 666.

It is not a de Polignac number, because 21407316457023 - 2⁸ = 21407316456767 is a prime.

It is a super-2 number, since 2×21407316457023² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 21407316457023.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21407316467023) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 92170458 + ... + 92402423.

It is an arithmetic number, because the mean of its divisors is an integer number (1002969040788).

Almost surely, 2^{21407316457023} is an apocalyptic number.

21407316457023 is a deficient number, since it is larger than the sum of its proper divisors (14699569011345).

21407316457023 is a wasteful number, since it uses less digits than its factorization.

21407316457023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184573164 (or 184573154 counting only the distinct ones).

The product of its (nonzero) digits is 846720, while the sum is 45.

The spelling of 21407316457023 in words is "twenty-one trillion, four hundred seven billion, three hundred sixteen million, four hundred fifty-seven thousand, twenty-three".