133368136690 has 16 divisors (see below), whose sum is σ = 241110958680. Its totient is φ = 53114296320.

The previous prime is 133368136669. The next prime is 133368136691. The reversal of 133368136690 is 96631863331.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 116171223921 + 17196912769 = 340839^2 + 131137^2 .

It is a super-2 number, since 2×133368136690² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (133368136691) 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, 29117391 + ... + 29121970.

Almost surely, 2^133368136690 is an apocalyptic number.

133368136690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

133368136690 is a deficient number, since it is larger than the sum of its proper divisors (107742821990).

133368136690 is a wasteful number, since it uses less digits than its factorization.

133368136690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58239597.

The product of its (nonzero) digits is 1259712, while the sum is 49.

The spelling of 133368136690 in words is "one hundred thirty-three billion, three hundred sixty-eight million, one hundred thirty-six thousand, six hundred ninety".