132807236447681 has 4 divisors (see below), whose sum is σ = 132878599822164. Its totient is φ = 132735873073200.

The previous prime is 132807236447657. The next prime is 132807236447693. The reversal of 132807236447681 is 186744632708231.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1234063261456 + 131573173186225 = 1110884^2 + 11470535^2 .

It is a cyclic number.

It is not a de Polignac number, because 132807236447681 - 2¹⁸ = 132807236185537 is a prime.

It is a super-2 number, since 2×132807236447681² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (132807236447581) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35681684450 + ... + 35681688171.

It is an arithmetic number, because the mean of its divisors is an integer number (33219649955541).

Almost surely, 2^{132807236447681} is an apocalyptic number.

It is an amenable number.

132807236447681 is a deficient number, since it is larger than the sum of its proper divisors (71363374483).

132807236447681 is an equidigital number, since it uses as much as digits as its factorization.

132807236447681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71363374482.

The product of its (nonzero) digits is 65028096, while the sum is 62.

The spelling of 132807236447681 in words is "one hundred thirty-two trillion, eight hundred seven billion, two hundred thirty-six million, four hundred forty-seven thousand, six hundred eighty-one".