21637343379083 has 2 divisors, whose sum is σ = 21637343379084. Its totient is φ = 21637343379082.

The previous prime is 21637343379059. The next prime is 21637343379133. The reversal of 21637343379083 is 38097334373612.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21637343379083 - 2²⁴ = 21637326601867 is a prime.

It is not a weakly prime, because it can be changed into another prime (21637343379013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10818671689541 + 10818671689542.

It is an arithmetic number, because the mean of its divisors is an integer number (10818671689542).

Almost surely, 2^{21637343379083} is an apocalyptic number.

21637343379083 is a deficient number, since it is larger than the sum of its proper divisors (1).

21637343379083 is an equidigital number, since it uses as much as digits as its factorization.

21637343379083 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 41150592, while the sum is 59.

The spelling of 21637343379083 in words is "twenty-one trillion, six hundred thirty-seven billion, three hundred forty-three million, three hundred seventy-nine thousand, eighty-three".