83127562621 has 2 divisors, whose sum is σ = 83127562622. Its totient is φ = 83127562620.

The previous prime is 83127562613. The next prime is 83127562717. The reversal of 83127562621 is 12626572138.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 47289286521 + 35838276100 = 217461^2 + 189310^2 .

It is a cyclic number.

It is not a de Polignac number, because 83127562621 - 2³ = 83127562613 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (83127562121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41563781310 + 41563781311.

It is an arithmetic number, because the mean of its divisors is an integer number (41563781311).

Almost surely, 2^83127562621 is an apocalyptic number.

It is an amenable number.

83127562621 is a deficient number, since it is larger than the sum of its proper divisors (1).

83127562621 is an equidigital number, since it uses as much as digits as its factorization.

83127562621 is an evil number, because the sum of its binary digits is even.

The product of its digits is 241920, while the sum is 43.

The spelling of 83127562621 in words is "eighty-three billion, one hundred twenty-seven million, five hundred sixty-two thousand, six hundred twenty-one".