15240121253 has 16 divisors (see below), whose sum is σ = 18268629504. Its totient is φ = 12439474560.

The previous prime is 15240121243. The next prime is 15240121279. The reversal of 15240121253 is 35212104251.

15240121253 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 15240121253 - 2¹⁸ = 15239859109 is a prime.

It is a super-2 number, since 2×15240121253² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15240121243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 613808 + ... + 638153.

It is an arithmetic number, because the mean of its divisors is an integer number (1141789344).

Almost surely, 2^15240121253 is an apocalyptic number.

It is an amenable number.

15240121253 is a deficient number, since it is larger than the sum of its proper divisors (3028508251).

15240121253 is a wasteful number, since it uses less digits than its factorization.

15240121253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1252052.

The product of its (nonzero) digits is 2400, while the sum is 26.

The spelling of 15240121253 in words is "fifteen billion, two hundred forty million, one hundred twenty-one thousand, two hundred fifty-three".