133458527381 has 4 divisors (see below), whose sum is σ = 133466942700. Its totient is φ = 133450112064.

The previous prime is 133458527347. The next prime is 133458527413. The reversal of 133458527381 is 183725854331.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 61826822500 + 71631704881 = 248650^2 + 267641^2 .

It is a cyclic number.

It is not a de Polignac number, because 133458527381 - 2³⁰ = 132384785557 is a prime.

It is a super-2 number, since 2×133458527381² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133458527311) 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, 4183826 + ... + 4215603.

It is an arithmetic number, because the mean of its divisors is an integer number (33366735675).

Almost surely, 2^133458527381 is an apocalyptic number.

It is an amenable number.

133458527381 is a deficient number, since it is larger than the sum of its proper divisors (8415319).

133458527381 is an equidigital number, since it uses as much as digits as its factorization.

133458527381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8415318.

The product of its digits is 2419200, while the sum is 50.

The spelling of 133458527381 in words is "one hundred thirty-three billion, four hundred fifty-eight million, five hundred twenty-seven thousand, three hundred eighty-one".