18095161835521 has 4 divisors (see below), whose sum is σ = 18095175627952. Its totient is φ = 18095148043092.

The previous prime is 18095161835501. The next prime is 18095161835561. The reversal of 18095161835521 is 12553816159081.

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 18095161835521 - 2¹⁹ = 18095161311233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18095161835501) 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, 4693815 + ... + 7630348.

It is an arithmetic number, because the mean of its divisors is an integer number (4523793906988).

Almost surely, 2^{18095161835521} is an apocalyptic number.

It is an amenable number.

18095161835521 is a deficient number, since it is larger than the sum of its proper divisors (13792431).

18095161835521 is a wasteful number, since it uses less digits than its factorization.

18095161835521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13792430.

The product of its (nonzero) digits is 2592000, while the sum is 55.

The spelling of 18095161835521 in words is "eighteen trillion, ninety-five billion, one hundred sixty-one million, eight hundred thirty-five thousand, five hundred twenty-one".