15121144243453 has 16 divisors (see below), whose sum is σ = 15755280938496. Its totient is φ = 14496163254720.

The previous prime is 15121144243433. The next prime is 15121144243477. The reversal of 15121144243453 is 35434244112151.

It is a cyclic number.

It is not a de Polignac number, because 15121144243453 - 2²¹ = 15121142146301 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 (15121144243433) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 176331975 + ... + 176417707.

It is an arithmetic number, because the mean of its divisors is an integer number (984705058656).

Almost surely, 2^{15121144243453} is an apocalyptic number.

It is an amenable number.

15121144243453 is a deficient number, since it is larger than the sum of its proper divisors (634136695043).

15121144243453 is a wasteful number, since it uses less digits than its factorization.

15121144243453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139044.

The product of its digits is 230400, while the sum is 40.

The spelling of 15121144243453 in words is "fifteen trillion, one hundred twenty-one billion, one hundred forty-four million, two hundred forty-three thousand, four hundred fifty-three".