621140065001 has 2 divisors, whose sum is σ = 621140065002. Its totient is φ = 621140065000.

The previous prime is 621140064997. The next prime is 621140065093. The reversal of 621140065001 is 100560041126.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 620762773225 + 377291776 = 787885^2 + 19424^2 .

It is a cyclic number.

It is not a de Polignac number, because 621140065001 - 2² = 621140064997 is a prime.

It is not a weakly prime, because it can be changed into another prime (621140067001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 310570032500 + 310570032501.

It is an arithmetic number, because the mean of its divisors is an integer number (310570032501).

Almost surely, 2^621140065001 is an apocalyptic number.

It is an amenable number.

621140065001 is a deficient number, since it is larger than the sum of its proper divisors (1).

621140065001 is an equidigital number, since it uses as much as digits as its factorization.

621140065001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1440, while the sum is 26.

The spelling of 621140065001 in words is "six hundred twenty-one billion, one hundred forty million, sixty-five thousand, one".