133540068688 has 40 divisors (see below), whose sum is σ = 278659812200. Its totient is φ = 61628719104.

The previous prime is 133540068671. The next prime is 133540068691. The reversal of 133540068688 is 886860045331.

It can be written as a sum of positive squares in 4 ways, for example, as 6695821584 + 126844247104 = 81828^2 + 356152^2 .

It is a Harshad number since it is a multiple of its sum of digits (52).

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, 3711328 + ... + 3747136.

It is an arithmetic number, because the mean of its divisors is an integer number (6966495305).

Almost surely, 2^133540068688 is an apocalyptic number.

It is an amenable number.

133540068688 is an abundant number, since it is smaller than the sum of its proper divisors (145119743512).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

133540068688 is a wasteful number, since it uses less digits than its factorization.

133540068688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53759 (or 53753 counting only the distinct ones).

The product of its (nonzero) digits is 3317760, while the sum is 52.

The spelling of 133540068688 in words is "one hundred thirty-three billion, five hundred forty million, sixty-eight thousand, six hundred eighty-eight".