15531054223073 has 2 divisors, whose sum is σ = 15531054223074. Its totient is φ = 15531054223072.

The previous prime is 15531054223037. The next prime is 15531054223081. The reversal of 15531054223073 is 37032245013551.

Together with previous prime (15531054223037) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7768076914129 + 7762977308944 = 2787127^2 + 2786212^2 .

It is a cyclic number.

It is not a de Polignac number, because 15531054223073 - 2¹⁰ = 15531054222049 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 15531054223073.

It is not a weakly prime, because it can be changed into another prime (15531054225073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7765527111536 + 7765527111537.

It is an arithmetic number, because the mean of its divisors is an integer number (7765527111537).

Almost surely, 2^{15531054223073} is an apocalyptic number.

It is an amenable number.

15531054223073 is a deficient number, since it is larger than the sum of its proper divisors (1).

15531054223073 is an equidigital number, since it uses as much as digits as its factorization.

15531054223073 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 378000, while the sum is 41.

The spelling of 15531054223073 in words is "fifteen trillion, five hundred thirty-one billion, fifty-four million, two hundred twenty-three thousand, seventy-three".