133613661243461 has 4 divisors (see below), whose sum is σ = 152701327135392. Its totient is φ = 114525995351532.

The previous prime is 133613661243431. The next prime is 133613661243497. The reversal of 133613661243461 is 164342166316331.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 133613661243461 - 2²² = 133613657049157 is a prime.

It is a super-2 number, since 2×133613661243461² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133613661243431) 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, 9543832945955 + ... + 9543832945968.

It is an arithmetic number, because the mean of its divisors is an integer number (38175331783848).

Almost surely, 2^{133613661243461} is an apocalyptic number.

It is an amenable number.

133613661243461 is a deficient number, since it is larger than the sum of its proper divisors (19087665891931).

133613661243461 is an equidigital number, since it uses as much as digits as its factorization.

133613661243461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19087665891930.

The product of its digits is 3359232, while the sum is 50.

The spelling of 133613661243461 in words is "one hundred thirty-three trillion, six hundred thirteen billion, six hundred sixty-one million, two hundred forty-three thousand, four hundred sixty-one".