15168220453 has 4 divisors (see below), whose sum is σ = 15178806828. Its totient is φ = 15157634080.

The previous prime is 15168220409. The next prime is 15168220469. The reversal of 15168220453 is 35402286151.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 35402286151 = 307 ⋅115316893.

It can be written as a sum of positive squares in 2 ways, for example, as 13671923329 + 1496297124 = 116927^2 + 38682^2 .

It is a cyclic number.

It is not a de Polignac number, because 15168220453 - 2¹³ = 15168212261 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15168220493) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5291038 + ... + 5293903.

It is an arithmetic number, because the mean of its divisors is an integer number (3794701707).

Almost surely, 2^15168220453 is an apocalyptic number.

It is an amenable number.

15168220453 is a deficient number, since it is larger than the sum of its proper divisors (10586375).

15168220453 is a wasteful number, since it uses less digits than its factorization.

15168220453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10586374.

The product of its (nonzero) digits is 57600, while the sum is 37.

The spelling of 15168220453 in words is "fifteen billion, one hundred sixty-eight million, two hundred twenty thousand, four hundred fifty-three".