15145967782969 has 2 divisors, whose sum is σ = 15145967782970. Its totient is φ = 15145967782968.

The previous prime is 15145967782937. The next prime is 15145967782999. The reversal of 15145967782969 is 96928776954151.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14728862352400 + 417105430569 = 3837820^2 + 645837^2 .

It is a cyclic number.

It is not a de Polignac number, because 15145967782969 - 2⁵ = 15145967782937 is a prime.

It is a super-2 number, since 2×15145967782969² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (15145967782999) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7572983891484 + 7572983891485.

It is an arithmetic number, because the mean of its divisors is an integer number (7572983891485).

Almost surely, 2^{15145967782969} is an apocalyptic number.

It is an amenable number.

15145967782969 is a deficient number, since it is larger than the sum of its proper divisors (1).

15145967782969 is an equidigital number, since it uses as much as digits as its factorization.

15145967782969 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2057529600, while the sum is 79.

The spelling of 15145967782969 in words is "fifteen trillion, one hundred forty-five billion, nine hundred sixty-seven million, seven hundred eighty-two thousand, nine hundred sixty-nine".