43132137691 has 8 divisors (see below), whose sum is σ = 43265082960. Its totient is φ = 42999393312.

The previous prime is 43132137689. The next prime is 43132137701. The reversal of 43132137691 is 19673123134.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 43132137691 - 2¹ = 43132137689 is a prime.

It is a super-2 number, since 2×43132137691² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43132137641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 385645 + ... + 484753.

It is an arithmetic number, because the mean of its divisors is an integer number (5408135370).

Almost surely, 2^43132137691 is an apocalyptic number.

43132137691 is a deficient number, since it is larger than the sum of its proper divisors (132945269).

43132137691 is an equidigital number, since it uses as much as digits as its factorization.

43132137691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100445.

The product of its digits is 81648, while the sum is 40.

The spelling of 43132137691 in words is "forty-three billion, one hundred thirty-two million, one hundred thirty-seven thousand, six hundred ninety-one".