133465222031623 has 4 divisors (see below), whose sum is σ = 133466930202240. Its totient is φ = 133463513861008.

The previous prime is 133465222031579. The next prime is 133465222031681. The reversal of 133465222031623 is 326130222564331.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-133465222031623 is a prime.

It is a super-2 number, since 2×133465222031623² (a number of 29 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 133465222031623.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133465222034623) 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, 853968103 + ... + 854124376.

It is an arithmetic number, because the mean of its divisors is an integer number (33366732550560).

Almost surely, 2^{133465222031623} is an apocalyptic number.

133465222031623 is a deficient number, since it is larger than the sum of its proper divisors (1708170617).

133465222031623 is an equidigital number, since it uses as much as digits as its factorization.

133465222031623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1708170616.

The product of its (nonzero) digits is 933120, while the sum is 43.

Adding to 133465222031623 its reverse (326130222564331), we get a palindrome (459595444595954).

The spelling of 133465222031623 in words is "one hundred thirty-three trillion, four hundred sixty-five billion, two hundred twenty-two million, thirty-one thousand, six hundred twenty-three".