15252543121161 has 4 divisors (see below), whose sum is σ = 20336724161552. Its totient is φ = 10168362080772.

The previous prime is 15252543121139. The next prime is 15252543121183. The reversal of 15252543121161 is 16112134525251.

15252543121161 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 an interprime number because it is at equal distance from previous prime (15252543121139) and next prime (15252543121183).

It is not a de Polignac number, because 15252543121161 - 2⁶ = 15252543121097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15252543121061) 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, 2542090520191 + ... + 2542090520196.

It is an arithmetic number, because the mean of its divisors is an integer number (5084181040388).

Almost surely, 2^{15252543121161} is an apocalyptic number.

It is an amenable number.

15252543121161 is a deficient number, since it is larger than the sum of its proper divisors (5084181040391).

15252543121161 is an equidigital number, since it uses as much as digits as its factorization.

15252543121161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5084181040390.

The product of its digits is 72000, while the sum is 39.

The spelling of 15252543121161 in words is "fifteen trillion, two hundred fifty-two billion, five hundred forty-three million, one hundred twenty-one thousand, one hundred sixty-one".