15105223047553 has 12 divisors (see below), whose sum is σ = 16092010066300. Its totient is φ = 14175944946432.

The previous prime is 15105223047529. The next prime is 15105223047647. The reversal of 15105223047553 is 35574032250151.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 3362209978689 + 11743013068864 = 1833633^2 + 3426808^2 .

It is a de Polignac number, because none of the positive numbers 2^k-15105223047553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15105223047053) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 74780526 + ... + 74982247.

Almost surely, 2^{15105223047553} is an apocalyptic number.

It is an amenable number.

15105223047553 is a deficient number, since it is larger than the sum of its proper divisors (986787018747).

15105223047553 is a wasteful number, since it uses less digits than its factorization.

15105223047553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149763156 (or 149763139 counting only the distinct ones).

The product of its (nonzero) digits is 630000, while the sum is 43.

The spelling of 15105223047553 in words is "fifteen trillion, one hundred five billion, two hundred twenty-three million, forty-seven thousand, five hundred fifty-three".