15553673137 has 2 divisors, whose sum is σ = 15553673138. Its totient is φ = 15553673136.

The previous prime is 15553673123. The next prime is 15553673243. The reversal of 15553673137 is 73137635551.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13276570176 + 2277102961 = 115224^2 + 47719^2 .

It is a cyclic number.

It is not a de Polignac number, because 15553673137 - 2²³ = 15545284529 is a prime.

It is not a weakly prime, because it can be changed into another prime (15553673537) 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, 7776836568 + 7776836569.

It is an arithmetic number, because the mean of its divisors is an integer number (7776836569).

Almost surely, 2^15553673137 is an apocalyptic number.

It is an amenable number.

15553673137 is a deficient number, since it is larger than the sum of its proper divisors (1).

15553673137 is an equidigital number, since it uses as much as digits as its factorization.

15553673137 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 992250, while the sum is 46.

The spelling of 15553673137 in words is "fifteen billion, five hundred fifty-three million, six hundred seventy-three thousand, one hundred thirty-seven".