621349098089 has 2 divisors, whose sum is σ = 621349098090. Its totient is φ = 621349098088.

The previous prime is 621349098061. The next prime is 621349098127. The reversal of 621349098089 is 980890943126.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 599269515625 + 22079582464 = 774125^2 + 148592^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-621349098089 is a prime.

It is not a weakly prime, because it can be changed into another prime (621349008089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 310674549044 + 310674549045.

It is an arithmetic number, because the mean of its divisors is an integer number (310674549045).

Almost surely, 2^621349098089 is an apocalyptic number.

It is an amenable number.

621349098089 is a deficient number, since it is larger than the sum of its proper divisors (1).

621349098089 is an equidigital number, since it uses as much as digits as its factorization.

621349098089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6718464, while the sum is 59.

The spelling of 621349098089 in words is "six hundred twenty-one billion, three hundred forty-nine million, ninety-eight thousand, eighty-nine".