133664411370605 has 96 divisors (see below), whose sum is σ = 180274124747808. Its totient is φ = 94686481612800.

The previous prime is 133664411370599. The next prime is 133664411370643. The reversal of 133664411370605 is 506073114466331.

It can be written as a sum of positive squares in 48 ways, for example, as 129853568599561 + 3810842771044 = 11395331^2 + 1952138^2 .

It is not a de Polignac number, because 133664411370605 - 2³⁸ = 133389533463661 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1646458115 + ... + 1646539295.

It is an arithmetic number, because the mean of its divisors is an integer number (1877855466123).

Almost surely, 2^{133664411370605} is an apocalyptic number.

It is an amenable number.

133664411370605 is a deficient number, since it is larger than the sum of its proper divisors (46609713377203).

133664411370605 is a wasteful number, since it uses less digits than its factorization.

133664411370605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81507 (or 81394 counting only the distinct ones).

The product of its (nonzero) digits is 3265920, while the sum is 50.

The spelling of 133664411370605 in words is "one hundred thirty-three trillion, six hundred sixty-four billion, four hundred eleven million, three hundred seventy thousand, six hundred five".