15345147769 has 6 divisors (see below), whose sum is σ = 17850478074. Its totient is φ = 13152983760.

The previous prime is 15345147737. The next prime is 15345147893. The reversal of 15345147769 is 96774154351.

It can be written as a sum of positive squares in only one way, i.e., 9582060544 + 5763087225 = 97888^2 + 75915^2 .

It is not a de Polignac number, because 15345147769 - 2⁵ = 15345147737 is a prime.

It is a super-2 number, since 2×15345147769² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15345147709) 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 in 5 ways as a sum of consecutive naturals, for example, 156583092 + ... + 156583189.

It is an arithmetic number, because the mean of its divisors is an integer number (2975079679).

Almost surely, 2^15345147769 is an apocalyptic number.

It is an amenable number.

15345147769 is a deficient number, since it is larger than the sum of its proper divisors (2505330305).

15345147769 is an equidigital number, since it uses as much as digits as its factorization.

15345147769 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 313166295 (or 313166288 counting only the distinct ones).

The product of its digits is 3175200, while the sum is 52.

The spelling of 15345147769 in words is "fifteen billion, three hundred forty-five million, one hundred forty-seven thousand, seven hundred sixty-nine".