138313453833 has 6 divisors (see below), whose sum is σ = 199786099994. Its totient is φ = 92208969216.

The previous prime is 138313453829. The next prime is 138313453843. The reversal of 138313453833 is 338354313831.

138313453833 is a `hidden beast` number, since 1 + 3 + 83 + 1 + 3 + 4 + 538 + 33 = 666.

It can be written as a sum of positive squares in only one way, i.e., 110073323529 + 28240130304 = 331773^2 + 168048^2 .

It is not a de Polignac number, because 138313453833 - 2² = 138313453829 is a prime.

It is a super-2 number, since 2×138313453833² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (138313453843) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7684080760 + ... + 7684080777.

Almost surely, 2^138313453833 is an apocalyptic number.

It is an amenable number.

138313453833 is a deficient number, since it is larger than the sum of its proper divisors (61472646161).

138313453833 is a wasteful number, since it uses less digits than its factorization.

138313453833 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15368161543 (or 15368161540 counting only the distinct ones).

The product of its digits is 933120, while the sum is 45.

The spelling of 138313453833 in words is "one hundred thirty-eight billion, three hundred thirteen million, four hundred fifty-three thousand, eight hundred thirty-three".