621840092441 has 2 divisors, whose sum is σ = 621840092442. Its totient is φ = 621840092440.

The previous prime is 621840092429. The next prime is 621840092477. The reversal of 621840092441 is 144290048126.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 588872064400 + 32968028041 = 767380^2 + 181571^2 .

It is a cyclic number.

It is not a de Polignac number, because 621840092441 - 2³⁴ = 604660223257 is a prime.

It is not a weakly prime, because it can be changed into another prime (621840097441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 310920046220 + 310920046221.

It is an arithmetic number, because the mean of its divisors is an integer number (310920046221).

Almost surely, 2^621840092441 is an apocalyptic number.

It is an amenable number.

621840092441 is a deficient number, since it is larger than the sum of its proper divisors (1).

621840092441 is an equidigital number, since it uses as much as digits as its factorization.

621840092441 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 110592, while the sum is 41.

The spelling of 621840092441 in words is "six hundred twenty-one billion, eight hundred forty million, ninety-two thousand, four hundred forty-one".