21373576624031 has 2 divisors, whose sum is σ = 21373576624032. Its totient is φ = 21373576624030.

The previous prime is 21373576623977. The next prime is 21373576624067. The reversal of 21373576624031 is 13042667537312.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21373576624031 is a prime.

It is a super-2 number, since 2×21373576624031² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21373576623031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10686788312015 + 10686788312016.

It is an arithmetic number, because the mean of its divisors is an integer number (10686788312016).

Almost surely, 2^{21373576624031} is an apocalyptic number.

21373576624031 is a deficient number, since it is larger than the sum of its proper divisors (1).

21373576624031 is an equidigital number, since it uses as much as digits as its factorization.

21373576624031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3810240, while the sum is 50.

The spelling of 21373576624031 in words is "twenty-one trillion, three hundred seventy-three billion, five hundred seventy-six million, six hundred twenty-four thousand, thirty-one".