132645921437 has 4 divisors (see below), whose sum is σ = 140448622716. Its totient is φ = 124843220160.

The previous prime is 132645921407. The next prime is 132645921449. The reversal of 132645921437 is 734129546231.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 734129546231 = 29 ⋅25314811939.

It can be written as a sum of positive squares in 2 ways, for example, as 78098450521 + 54547470916 = 279461^2 + 233554^2 .

It is a cyclic number.

It is not a de Polignac number, because 132645921437 - 2²⁰ = 132644872861 is a prime.

It is a super-2 number, since 2×132645921437² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 132645921391 and 132645921400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (132645921407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3901350614 + ... + 3901350647.

It is an arithmetic number, because the mean of its divisors is an integer number (35112155679).

Almost surely, 2^132645921437 is an apocalyptic number.

132645921437 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

132645921437 is a deficient number, since it is larger than the sum of its proper divisors (7802701279).

132645921437 is an equidigital number, since it uses as much as digits as its factorization.

132645921437 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7802701278.

The product of its digits is 1088640, while the sum is 47.

The spelling of 132645921437 in words is "one hundred thirty-two billion, six hundred forty-five million, nine hundred twenty-one thousand, four hundred thirty-seven".