15142865869 has 2 divisors, whose sum is σ = 15142865870. Its totient is φ = 15142865868.

The previous prime is 15142865867. The next prime is 15142865891. The reversal of 15142865869 is 96856824151.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12152416644 + 2990449225 = 110238^2 + 54685^2 .

It is an emirp because it is prime and its reverse (96856824151) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 15142865869 - 2¹ = 15142865867 is a prime.

It is a super-2 number, since 2×15142865869² (a number of 21 digits) contains 22 as substring.

Together with 15142865867, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15142865863) 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, 7571432934 + 7571432935.

It is an arithmetic number, because the mean of its divisors is an integer number (7571432935).

Almost surely, 2^15142865869 is an apocalyptic number.

It is an amenable number.

15142865869 is a deficient number, since it is larger than the sum of its proper divisors (1).

15142865869 is an equidigital number, since it uses as much as digits as its factorization.

15142865869 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4147200, while the sum is 55.

The spelling of 15142865869 in words is "fifteen billion, one hundred forty-two million, eight hundred sixty-five thousand, eight hundred sixty-nine".