133309526428 has 12 divisors (see below), whose sum is σ = 251237184520. Its totient is φ = 61527473712.

The previous prime is 133309526423. The next prime is 133309526447. The reversal of 133309526428 is 824625903331.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133309526423) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1281822318 + ... + 1281822421.

Almost surely, 2^133309526428 is an apocalyptic number.

It is an amenable number.

133309526428 is a deficient number, since it is larger than the sum of its proper divisors (117927658092).

133309526428 is a wasteful number, since it uses less digits than its factorization.

133309526428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2563644756 (or 2563644754 counting only the distinct ones).

The product of its (nonzero) digits is 933120, while the sum is 46.

The spelling of 133309526428 in words is "one hundred thirty-three billion, three hundred nine million, five hundred twenty-six thousand, four hundred twenty-eight".