15213015504173 has 2 divisors, whose sum is σ = 15213015504174. Its totient is φ = 15213015504172.

The previous prime is 15213015504121. The next prime is 15213015504187. The reversal of 15213015504173 is 37140551031251.

15213015504173 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13293410796169 + 1919604708004 = 3646013^2 + 1385498^2 .

It is a cyclic number.

It is not a de Polignac number, because 15213015504173 - 2¹⁰ = 15213015503149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15213015504073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7606507752086 + 7606507752087.

It is an arithmetic number, because the mean of its divisors is an integer number (7606507752087).

Almost surely, 2^{15213015504173} is an apocalyptic number.

It is an amenable number.

15213015504173 is a deficient number, since it is larger than the sum of its proper divisors (1).

15213015504173 is an equidigital number, since it uses as much as digits as its factorization.

15213015504173 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 63000, while the sum is 38.

The spelling of 15213015504173 in words is "fifteen trillion, two hundred thirteen billion, fifteen million, five hundred four thousand, one hundred seventy-three".