21623047725743 has 4 divisors (see below), whose sum is σ = 21837137307288. Its totient is φ = 21408958144200.

The previous prime is 21623047725737. The next prime is 21623047725749. The reversal of 21623047725743 is 34752774032612.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (21623047725737) and next prime (21623047725749).

It is a cyclic number.

It is not a de Polignac number, because 21623047725743 - 2³⁰ = 21621973983919 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21623047725749) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 107044790621 + ... + 107044790822.

It is an arithmetic number, because the mean of its divisors is an integer number (5459284326822).

Almost surely, 2^{21623047725743} is an apocalyptic number.

21623047725743 is a deficient number, since it is larger than the sum of its proper divisors (214089581545).

21623047725743 is a wasteful number, since it uses less digits than its factorization.

21623047725743 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214089581544.

The product of its (nonzero) digits is 11854080, while the sum is 53.

The spelling of 21623047725743 in words is "twenty-one trillion, six hundred twenty-three billion, forty-seven million, seven hundred twenty-five thousand, seven hundred forty-three".