166411332461 has 16 divisors (see below), whose sum is σ = 188201931840. Its totient is φ = 145753466880.

The previous prime is 166411332421. The next prime is 166411332463. The reversal of 166411332461 is 164233114661.

It is a cyclic number.

It is not a de Polignac number, because 166411332461 - 2⁶ = 166411332397 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 (166411332463) 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, 409556 + ... + 707501.

It is an arithmetic number, because the mean of its divisors is an integer number (11762620740).

Almost surely, 2^166411332461 is an apocalyptic number.

166411332461 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

166411332461 is a deficient number, since it is larger than the sum of its proper divisors (21790599379).

166411332461 is a wasteful number, since it uses less digits than its factorization.

166411332461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1117564.

The product of its digits is 62208, while the sum is 38.

The spelling of 166411332461 in words is "one hundred sixty-six billion, four hundred eleven million, three hundred thirty-two thousand, four hundred sixty-one".