166140724432 has 20 divisors (see below), whose sum is σ = 321919222240. Its totient is φ = 83064796128.

The previous prime is 166140724427. The next prime is 166140724469. The reversal of 166140724432 is 234427041661.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 96108 + ... + 584395.

It is an arithmetic number, because the mean of its divisors is an integer number (16095961112).

Almost surely, 2^166140724432 is an apocalyptic number.

It is an amenable number.

166140724432 is a deficient number, since it is larger than the sum of its proper divisors (155778497808).

166140724432 is a wasteful number, since it uses less digits than its factorization.

166140724432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 695770 (or 695764 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 40.

The spelling of 166140724432 in words is "one hundred sixty-six billion, one hundred forty million, seven hundred twenty-four thousand, four hundred thirty-two".