13172361853 has 4 divisors (see below), whose sum is σ = 15054127840. Its totient is φ = 11290595868.

The previous prime is 13172361841. The next prime is 13172361863. The reversal of 13172361853 is 35816327131.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 13172361853 - 2¹⁷ = 13172230781 is a prime.

It is a super-2 number, since 2×13172361853² (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 (13172361863) 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, 940882983 + ... + 940882996.

It is an arithmetic number, because the mean of its divisors is an integer number (3763531960).

Almost surely, 2^13172361853 is an apocalyptic number.

It is an amenable number.

13172361853 is a deficient number, since it is larger than the sum of its proper divisors (1881765987).

13172361853 is an equidigital number, since it uses as much as digits as its factorization.

13172361853 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1881765986.

The product of its digits is 90720, while the sum is 40.

Adding to 13172361853 its reverse (35816327131), we get a palindrome (48988688984).

The spelling of 13172361853 in words is "thirteen billion, one hundred seventy-two million, three hundred sixty-one thousand, eight hundred fifty-three".