15492901728809 has 2 divisors, whose sum is σ = 15492901728810. Its totient is φ = 15492901728808.

The previous prime is 15492901728781. The next prime is 15492901728869. The reversal of 15492901728809 is 90882710929451.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13738349814784 + 1754551914025 = 3706528^2 + 1324595^2 .

It is a cyclic number.

It is not a de Polignac number, because 15492901728809 - 2²⁰ = 15492900680233 is a prime.

It is not a weakly prime, because it can be changed into another prime (15492901728869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7746450864404 + 7746450864405.

It is an arithmetic number, because the mean of its divisors is an integer number (7746450864405).

Almost surely, 2^{15492901728809} is an apocalyptic number.

It is an amenable number.

15492901728809 is a deficient number, since it is larger than the sum of its proper divisors (1).

15492901728809 is an equidigital number, since it uses as much as digits as its factorization.

15492901728809 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 26127360, while the sum is 65.

The spelling of 15492901728809 in words is "fifteen trillion, four hundred ninety-two billion, nine hundred one million, seven hundred twenty-eight thousand, eight hundred nine".