166729157744 has 10 divisors (see below), whose sum is σ = 323037743160. Its totient is φ = 83364578864.

The previous prime is 166729157711. The next prime is 166729157767. The reversal of 166729157744 is 447751927661.

It is a super-2 number, since 2×166729157744² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5210286164 + ... + 5210286195.

It is an arithmetic number, because the mean of its divisors is an integer number (32303774316).

Almost surely, 2^166729157744 is an apocalyptic number.

It is an amenable number.

166729157744 is a deficient number, since it is larger than the sum of its proper divisors (156308585416).

166729157744 is a wasteful number, since it uses less digits than its factorization.

166729157744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10420572367 (or 10420572361 counting only the distinct ones).

The product of its digits is 17781120, while the sum is 59.

The spelling of 166729157744 in words is "one hundred sixty-six billion, seven hundred twenty-nine million, one hundred fifty-seven thousand, seven hundred forty-four".