133188470428 has 24 divisors (see below), whose sum is σ = 255123948800. Its totient is φ = 60463869120.

The previous prime is 133188470399. The next prime is 133188470479. The reversal of 133188470428 is 824074881331.

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, 20991228 + ... + 20997571.

Almost surely, 2^133188470428 is an apocalyptic number.

It is an amenable number.

133188470428 is a deficient number, since it is larger than the sum of its proper divisors (121935478372).

133188470428 is a wasteful number, since it uses less digits than its factorization.

133188470428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41988877 (or 41988875 counting only the distinct ones).

The product of its (nonzero) digits is 1032192, while the sum is 49.

The spelling of 133188470428 in words is "one hundred thirty-three billion, one hundred eighty-eight million, four hundred seventy thousand, four hundred twenty-eight".