45350221661 has 2 divisors, whose sum is σ = 45350221662. Its totient is φ = 45350221660.

The previous prime is 45350221643. The next prime is 45350221667. The reversal of 45350221661 is 16612205354.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 34043940100 + 11306281561 = 184510^2 + 106331^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-45350221661 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45350221667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22675110830 + 22675110831.

It is an arithmetic number, because the mean of its divisors is an integer number (22675110831).

Almost surely, 2^45350221661 is an apocalyptic number.

It is an amenable number.

45350221661 is a deficient number, since it is larger than the sum of its proper divisors (1).

45350221661 is an equidigital number, since it uses as much as digits as its factorization.

45350221661 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 43200, while the sum is 35.

The spelling of 45350221661 in words is "forty-five billion, three hundred fifty million, two hundred twenty-one thousand, six hundred sixty-one".