188868664045 has 16 divisors (see below), whose sum is σ = 228741746688. Its totient is φ = 149698644480.

The previous prime is 188868664009. The next prime is 188868664063. The reversal of 188868664045 is 540466868881.

It is not a de Polignac number, because 188868664045 - 2¹¹ = 188868661997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 257085 + ... + 666205.

It is an arithmetic number, because the mean of its divisors is an integer number (14296359168).

Almost surely, 2^188868664045 is an apocalyptic number.

It is an amenable number.

188868664045 is a deficient number, since it is larger than the sum of its proper divisors (39873082643).

188868664045 is a wasteful number, since it uses less digits than its factorization.

188868664045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 409980.

The product of its (nonzero) digits is 70778880, while the sum is 64.

The spelling of 188868664045 in words is "one hundred eighty-eight billion, eight hundred sixty-eight million, six hundred sixty-four thousand, forty-five".