21623047071663 has 32 divisors (see below), whose sum is σ = 29994357399552. Its totient is φ = 13841142559200.

The previous prime is 21623047071599. The next prime is 21623047071677. The reversal of 21623047071663 is 36617074032612.

It is not a de Polignac number, because 21623047071663 - 2⁶ = 21623047071599 is a prime.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21623047071863) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7683328 + ... + 10113338.

It is an arithmetic number, because the mean of its divisors is an integer number (937323668736).

Almost surely, 2^{21623047071663} is an apocalyptic number.

21623047071663 is a deficient number, since it is larger than the sum of its proper divisors (8371310327889).

21623047071663 is a wasteful number, since it uses less digits than its factorization.

21623047071663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2430795.

The product of its (nonzero) digits is 1524096, while the sum is 48.

The spelling of 21623047071663 in words is "twenty-one trillion, six hundred twenty-three billion, forty-seven million, seventy-one thousand, six hundred sixty-three".