166461292844 has 144 divisors (see below), whose sum is σ = 397630248960. Its totient is φ = 59458924800.

The previous prime is 166461292843. The next prime is 166461292889. The reversal of 166461292844 is 448292164661.

It is not an unprimeable number, because it can be changed into a prime (166461292843) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1953824 + ... + 2037240.

Almost surely, 2^166461292844 is an apocalyptic number.

166461292844 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 166461292844, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (198815124480).

166461292844 is an abundant number, since it is smaller than the sum of its proper divisors (231168956116).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

166461292844 is a wasteful number, since it uses less digits than its factorization.

166461292844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83500 (or 83487 counting only the distinct ones).

The product of its digits is 3981312, while the sum is 53.

The spelling of 166461292844 in words is "one hundred sixty-six billion, four hundred sixty-one million, two hundred ninety-two thousand, eight hundred forty-four".