133121402164465 has 32 divisors (see below), whose sum is σ = 194144740876800. Its totient is φ = 86286551473920.

The previous prime is 133121402164379. The next prime is 133121402164477. The reversal of 133121402164465 is 564461204121331.

It is not a de Polignac number, because 133121402164465 - 2²⁵ = 133121368610033 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3210044425 + ... + 3210085894.

It is an arithmetic number, because the mean of its divisors is an integer number (6067023152400).

Almost surely, 2^{133121402164465} is an apocalyptic number.

It is an amenable number.

133121402164465 is a deficient number, since it is larger than the sum of its proper divisors (61023338712335).

133121402164465 is a wasteful number, since it uses less digits than its factorization.

133121402164465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6420130377.

The product of its (nonzero) digits is 414720, while the sum is 43.

Adding to 133121402164465 its reverse (564461204121331), we get a palindrome (697582606285796).

The spelling of 133121402164465 in words is "one hundred thirty-three trillion, one hundred twenty-one billion, four hundred two million, one hundred sixty-four thousand, four hundred sixty-five".