15503992875149 has 2 divisors, whose sum is σ = 15503992875150. Its totient is φ = 15503992875148.

The previous prime is 15503992875103. The next prime is 15503992875179. The reversal of 15503992875149 is 94157829930551.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12621322022500 + 2882670852649 = 3552650^2 + 1697843^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15503992875149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15503992875179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7751996437574 + 7751996437575.

It is an arithmetic number, because the mean of its divisors is an integer number (7751996437575).

Almost surely, 2^{15503992875149} is an apocalyptic number.

It is an amenable number.

15503992875149 is a deficient number, since it is larger than the sum of its proper divisors (1).

15503992875149 is an equidigital number, since it uses as much as digits as its factorization.

15503992875149 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 122472000, while the sum is 68.

The spelling of 15503992875149 in words is "fifteen trillion, five hundred three billion, nine hundred ninety-two million, eight hundred seventy-five thousand, one hundred forty-nine".