180166526862397 has 4 divisors (see below), whose sum is σ = 181850326178976. Its totient is φ = 178482727545820.

The previous prime is 180166526862281. The next prime is 180166526862433. The reversal of 180166526862397 is 793268625661081.

It is a happy number.

180166526862397 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 not a de Polignac number, because 180166526862397 - 2⁷ = 180166526862269 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (180166526802397) 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, 841899658129 + ... + 841899658342.

It is an arithmetic number, because the mean of its divisors is an integer number (45462581544744).

Almost surely, 2^{180166526862397} is an apocalyptic number.

It is an amenable number.

180166526862397 is a deficient number, since it is larger than the sum of its proper divisors (1683799316579).

180166526862397 is a wasteful number, since it uses less digits than its factorization.

180166526862397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1683799316578.

The product of its (nonzero) digits is 313528320, while the sum is 70.

The spelling of 180166526862397 in words is "one hundred eighty trillion, one hundred sixty-six billion, five hundred twenty-six million, eight hundred sixty-two thousand, three hundred ninety-seven".