166040955233343 has 48 divisors (see below), whose sum is σ = 244815634103040. Its totient is φ = 108419678091648.

The previous prime is 166040955233317. The next prime is 166040955233353. The reversal of 166040955233343 is 343332559040661.

166040955233343 is a `hidden beast` number, since 1 + 6 + 6 + 0 + 40 + 9 + 5 + 523 + 33 + 43 = 666.

166040955233343 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Cunningham number, because it is equal to 12885688²-1.

It is not a de Polignac number, because 166040955233343 - 2²² = 166040951039039 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 166040955233343.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166040955233353) 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, 1378708296 + ... + 1378828722.

It is an arithmetic number, because the mean of its divisors is an integer number (5100325710480).

Almost surely, 2^{166040955233343} is an apocalyptic number.

166040955233343 is a deficient number, since it is larger than the sum of its proper divisors (78774678869697).

166040955233343 is a wasteful number, since it uses less digits than its factorization.

166040955233343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136716 (or 136713 counting only the distinct ones).

The product of its (nonzero) digits is 20995200, while the sum is 54.

The spelling of 166040955233343 in words is "one hundred sixty-six trillion, forty billion, nine hundred fifty-five million, two hundred thirty-three thousand, three hundred forty-three".