15506341253 has 4 divisors (see below), whose sum is σ = 16699136748. Its totient is φ = 14313545760.

The previous prime is 15506341247. The next prime is 15506341289. The reversal of 15506341253 is 35214360551.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 35214360551 = 919 ⋅38318129.

It can be written as a sum of positive squares in 2 ways, for example, as 836771329 + 14669569924 = 28927^2 + 121118^2 .

It is a cyclic number.

It is not a de Polignac number, because 15506341253 - 2²⁴ = 15489564037 is a prime.

It is a super-2 number, since 2×15506341253² (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 (15506340253) 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, 596397728 + ... + 596397753.

It is an arithmetic number, because the mean of its divisors is an integer number (4174784187).

Almost surely, 2^15506341253 is an apocalyptic number.

15506341253 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

15506341253 is a deficient number, since it is larger than the sum of its proper divisors (1192795495).

15506341253 is a wasteful number, since it uses less digits than its factorization.

15506341253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1192795494.

The product of its (nonzero) digits is 54000, while the sum is 35.

The spelling of 15506341253 in words is "fifteen billion, five hundred six million, three hundred forty-one thousand, two hundred fifty-three".