15245166017779 has 2 divisors, whose sum is σ = 15245166017780. Its totient is φ = 15245166017778.

The previous prime is 15245166017717. The next prime is 15245166017819. The reversal of 15245166017779 is 97771066154251.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 15245166017779 - 2¹⁵ = 15245165985011 is a prime.

It is a super-2 number, since 2×15245166017779² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (15245166087779) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7622583008889 + 7622583008890.

It is an arithmetic number, because the mean of its divisors is an integer number (7622583008890).

Almost surely, 2^{15245166017779} is an apocalyptic number.

15245166017779 is a deficient number, since it is larger than the sum of its proper divisors (1).

15245166017779 is an equidigital number, since it uses as much as digits as its factorization.

15245166017779 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 22226400, while the sum is 61.

The spelling of 15245166017779 in words is "fifteen trillion, two hundred forty-five billion, one hundred sixty-six million, seventeen thousand, seven hundred seventy-nine".