133465012413661 has 4 divisors (see below), whose sum is σ = 133599689521024. Its totient is φ = 133330335306300.

The previous prime is 133465012413641. The next prime is 133465012413673. The reversal of 133465012413661 is 166314210564331.

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 133465012413661 - 2⁹ = 133465012413149 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133465012413631) 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, 67338552195 + ... + 67338554176.

It is an arithmetic number, because the mean of its divisors is an integer number (33399922380256).

Almost surely, 2^{133465012413661} is an apocalyptic number.

It is an amenable number.

133465012413661 is a deficient number, since it is larger than the sum of its proper divisors (134677107363).

133465012413661 is an equidigital number, since it uses as much as digits as its factorization.

133465012413661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134677107362.

The product of its (nonzero) digits is 933120, while the sum is 46.

Adding to 133465012413661 its reverse (166314210564331), we get a palindrome (299779222977992).

The spelling of 133465012413661 in words is "one hundred thirty-three trillion, four hundred sixty-five billion, twelve million, four hundred thirteen thousand, six hundred sixty-one".