133391111690 has 16 divisors (see below), whose sum is σ = 241100287560. Its totient is φ = 53135047680.

The previous prime is 133391111681. The next prime is 133391111699. The reversal of 133391111690 is 96111193331.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (133391111681) and next prime (133391111699).

It can be written as a sum of positive squares in 4 ways, for example, as 89585877481 + 43805234209 = 299309^2 + 209297^2 .

It is a super-2 number, since 2×133391111690² (a number of 23 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (133391111699) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27672095 + ... + 27676914.

Almost surely, 2^133391111690 is an apocalyptic number.

133391111690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

133391111690 is a deficient number, since it is larger than the sum of its proper divisors (107709175870).

133391111690 is a wasteful number, since it uses less digits than its factorization.

133391111690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55349257.

The product of its (nonzero) digits is 13122, while the sum is 38.

The spelling of 133391111690 in words is "one hundred thirty-three billion, three hundred ninety-one million, one hundred eleven thousand, six hundred ninety".