181347252063 has 16 divisors (see below), whose sum is σ = 243270107136. Its totient is φ = 120161437280.

The previous prime is 181347252061. The next prime is 181347252077. The reversal of 181347252063 is 360252743181.

It is a cyclic number.

It is not a de Polignac number, because 181347252063 - 2¹ = 181347252061 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (181347252061) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8131618 + ... + 8153888.

It is an arithmetic number, because the mean of its divisors is an integer number (15204381696).

Almost surely, 2^181347252063 is an apocalyptic number.

181347252063 is a deficient number, since it is larger than the sum of its proper divisors (61922855073).

181347252063 is a wasteful number, since it uses less digits than its factorization.

181347252063 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38694.

The product of its (nonzero) digits is 241920, while the sum is 42.

The spelling of 181347252063 in words is "one hundred eighty-one billion, three hundred forty-seven million, two hundred fifty-two thousand, sixty-three".