1252103472661 has 2 divisors, whose sum is σ = 1252103472662. Its totient is φ = 1252103472660.

The previous prime is 1252103472629. The next prime is 1252103472677. The reversal of 1252103472661 is 1662743012521.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 952002198436 + 300101274225 = 975706^2 + 547815^2 .

It is a cyclic number.

It is not a de Polignac number, because 1252103472661 - 2⁵ = 1252103472629 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1252103472601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 626051736330 + 626051736331.

It is an arithmetic number, because the mean of its divisors is an integer number (626051736331).

Almost surely, 2^{1252103472661} is an apocalyptic number.

It is an amenable number.

1252103472661 is a deficient number, since it is larger than the sum of its proper divisors (1).

1252103472661 is an equidigital number, since it uses as much as digits as its factorization.

1252103472661 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 120960, while the sum is 40.

The spelling of 1252103472661 in words is "one trillion, two hundred fifty-two billion, one hundred three million, four hundred seventy-two thousand, six hundred sixty-one".