43132123651 has 4 divisors (see below), whose sum is σ = 43201804600. Its totient is φ = 43062442704.

The previous prime is 43132123633. The next prime is 43132123669. The reversal of 43132123651 is 15632123134.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 15632123134 = 2 ⋅7816061567.

It is an interprime number because it is at equal distance from previous prime (43132123633) and next prime (43132123669).

It is a cyclic number.

It is not a de Polignac number, because 43132123651 - 2²⁵ = 43098569219 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43132123751) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34839546 + ... + 34840783.

It is an arithmetic number, because the mean of its divisors is an integer number (10800451150).

Almost surely, 2^43132123651 is an apocalyptic number.

43132123651 is a deficient number, since it is larger than the sum of its proper divisors (69680949).

43132123651 is an equidigital number, since it uses as much as digits as its factorization.

43132123651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69680948.

The product of its digits is 12960, while the sum is 31.

Adding to 43132123651 its reverse (15632123134), we get a palindrome (58764246785).

The spelling of 43132123651 in words is "forty-three billion, one hundred thirty-two million, one hundred twenty-three thousand, six hundred fifty-one".