66170035437 has 32 divisors (see below), whose sum is σ = 97109228160. Its totient is φ = 40075587200.

The previous prime is 66170035429. The next prime is 66170035441. The reversal of 66170035437 is 73453007166.

It is a happy number.

It is not a de Polignac number, because 66170035437 - 2³ = 66170035429 is a prime.

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66170035457) 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 31 ways as a sum of consecutive naturals, for example, 6867139 + ... + 6876767.

It is an arithmetic number, because the mean of its divisors is an integer number (3034663380).

Almost surely, 2^66170035437 is an apocalyptic number.

It is an amenable number.

66170035437 is a deficient number, since it is larger than the sum of its proper divisors (30939192723).

66170035437 is a wasteful number, since it uses less digits than its factorization.

66170035437 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11386 (or 11364 counting only the distinct ones).

The product of its (nonzero) digits is 317520, while the sum is 42.

The spelling of 66170035437 in words is "sixty-six billion, one hundred seventy million, thirty-five thousand, four hundred thirty-seven".