133135873690 has 8 divisors (see below), whose sum is σ = 239644572660. Its totient is φ = 53254349472.

The previous prime is 133135873679. The next prime is 133135873697. The reversal of 133135873690 is 96378531331.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 128541609729 + 4594263961 = 358527^2 + 67781^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-3 number, since 3×133135873690³ (a number of 34 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (133135873697) 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, 6656793675 + ... + 6656793694.

Almost surely, 2^133135873690 is an apocalyptic number.

133135873690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

133135873690 is a deficient number, since it is larger than the sum of its proper divisors (106508698970).

133135873690 is a wasteful number, since it uses less digits than its factorization.

133135873690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13313587376.

The product of its (nonzero) digits is 1224720, while the sum is 49.

The spelling of 133135873690 in words is "one hundred thirty-three billion, one hundred thirty-five million, eight hundred seventy-three thousand, six hundred ninety".