16662571042407 has 32 divisors (see below), whose sum is σ = 22916177872896. Its totient is φ = 10762892431200.

The previous prime is 16662571042399. The next prime is 16662571042441. The reversal of 16662571042407 is 70424017526661.

It is not a de Polignac number, because 16662571042407 - 2³ = 16662571042399 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 16662571042407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16662571042207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 42101232 + ... + 42495162.

It is an arithmetic number, because the mean of its divisors is an integer number (716130558528).

Almost surely, 2^{16662571042407} is an apocalyptic number.

16662571042407 is a deficient number, since it is larger than the sum of its proper divisors (6253606830489).

16662571042407 is a wasteful number, since it uses less digits than its factorization.

16662571042407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 396611.

The product of its (nonzero) digits is 3386880, while the sum is 51.

The spelling of 16662571042407 in words is "sixteen trillion, six hundred sixty-two billion, five hundred seventy-one million, forty-two thousand, four hundred seven".