166047311461 has 4 divisors (see below), whose sum is σ = 166052440800. Its totient is φ = 166042182124.

The previous prime is 166047311459. The next prime is 166047311489. The reversal of 166047311461 is 164113740661.

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 166047311461 - 2¹ = 166047311459 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 (166047311491) 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, 2515801 + ... + 2580958.

It is an arithmetic number, because the mean of its divisors is an integer number (41513110200).

Almost surely, 2^166047311461 is an apocalyptic number.

It is an amenable number.

166047311461 is a deficient number, since it is larger than the sum of its proper divisors (5129339).

166047311461 is an equidigital number, since it uses as much as digits as its factorization.

166047311461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5129338.

The product of its (nonzero) digits is 72576, while the sum is 40.

The spelling of 166047311461 in words is "one hundred sixty-six billion, forty-seven million, three hundred eleven thousand, four hundred sixty-one".