621414414097 has 2 divisors, whose sum is σ = 621414414098. Its totient is φ = 621414414096.

The previous prime is 621414414079. The next prime is 621414414157. The reversal of 621414414097 is 790414414126.

Together with previous prime (621414414079) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 609155274256 + 12259139841 = 780484^2 + 110721^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-621414414097 is a prime.

It is not a weakly prime, because it can be changed into another prime (621414444097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 310707207048 + 310707207049.

It is an arithmetic number, because the mean of its divisors is an integer number (310707207049).

Almost surely, 2^621414414097 is an apocalyptic number.

It is an amenable number.

621414414097 is a deficient number, since it is larger than the sum of its proper divisors (1).

621414414097 is an equidigital number, since it uses as much as digits as its factorization.

621414414097 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 193536, while the sum is 43.

The spelling of 621414414097 in words is "six hundred twenty-one billion, four hundred fourteen million, four hundred fourteen thousand, ninety-seven".