133458516673 has 4 divisors (see below), whose sum is σ = 133590263508. Its totient is φ = 133326769840.

The previous prime is 133458516637. The next prime is 133458516691. The reversal of 133458516673 is 376615854331.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 376615854331 = 8597 ⋅43807823.

It can be written as a sum of positive squares in 2 ways, for example, as 16171445889 + 117287070784 = 127167^2 + 342472^2 .

It is a cyclic number.

It is not a de Polignac number, because 133458516673 - 2²⁵ = 133424962241 is a prime.

It is a super-2 number, since 2×133458516673² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 133458516673.

It is not an unprimeable number, because it can be changed into a prime (133458516613) 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, 65871898 + ... + 65873923.

It is an arithmetic number, because the mean of its divisors is an integer number (33397565877).

Almost surely, 2^133458516673 is an apocalyptic number.

It is an amenable number.

133458516673 is a deficient number, since it is larger than the sum of its proper divisors (131746835).

133458516673 is a wasteful number, since it uses less digits than its factorization.

133458516673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131746834.

The product of its digits is 5443200, while the sum is 52.

The spelling of 133458516673 in words is "one hundred thirty-three billion, four hundred fifty-eight million, five hundred sixteen thousand, six hundred seventy-three".