166049933731 has 16 divisors (see below), whose sum is σ = 184379846400. Its totient is φ = 148274912800.

The previous prime is 166049933729. The next prime is 166049933759. The reversal of 166049933731 is 137339940661.

166049933731 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 166049933731 - 2¹ = 166049933729 is a prime.

It is a super-2 number, since 2×166049933731² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (166049933131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 185101 + ... + 605278.

It is an arithmetic number, because the mean of its divisors is an integer number (11523740400).

Almost surely, 2^166049933731 is an apocalyptic number.

166049933731 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

166049933731 is a deficient number, since it is larger than the sum of its proper divisors (18329912669).

166049933731 is a wasteful number, since it uses less digits than its factorization.

166049933731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 790730.

The product of its (nonzero) digits is 2204496, while the sum is 52.

The spelling of 166049933731 in words is "one hundred sixty-six billion, forty-nine million, nine hundred thirty-three thousand, seven hundred thirty-one".