21623056027071 has 4 divisors (see below), whose sum is σ = 28830741369432. Its totient is φ = 14415370684712.

The previous prime is 21623056027039. The next prime is 21623056027081. The reversal of 21623056027071 is 17072065032612.

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

It is a cyclic number.

It is not a de Polignac number, because 21623056027071 - 2⁵ = 21623056027039 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21623056027081) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3603842671176 + ... + 3603842671181.

It is an arithmetic number, because the mean of its divisors is an integer number (7207685342358).

Almost surely, 2^{21623056027071} is an apocalyptic number.

21623056027071 is a deficient number, since it is larger than the sum of its proper divisors (7207685342361).

21623056027071 is an equidigital number, since it uses as much as digits as its factorization.

21623056027071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7207685342360.

The product of its (nonzero) digits is 211680, while the sum is 42.

The spelling of 21623056027071 in words is "twenty-one trillion, six hundred twenty-three billion, fifty-six million, twenty-seven thousand, seventy-one".