133866821744 has 40 divisors (see below), whose sum is σ = 261853709040. Its totient is φ = 66291972608.

The previous prime is 133866821689. The next prime is 133866821779. The reversal of 133866821744 is 447128668331.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10726292 + ... + 10738764.

It is an arithmetic number, because the mean of its divisors is an integer number (6546342726).

Almost surely, 2^133866821744 is an apocalyptic number.

It is an amenable number.

133866821744 is a deficient number, since it is larger than the sum of its proper divisors (127986887296).

133866821744 is a wasteful number, since it uses less digits than its factorization.

133866821744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18857 (or 18851 counting only the distinct ones).

The product of its digits is 4644864, while the sum is 53.

The spelling of 133866821744 in words is "one hundred thirty-three billion, eight hundred sixty-six million, eight hundred twenty-one thousand, seven hundred forty-four".