43137782141 has 4 divisors (see below), whose sum is σ = 44625291900. Its totient is φ = 41650272384.

The previous prime is 43137782123. The next prime is 43137782143. The reversal of 43137782141 is 14128773134.

It is a happy number.

43137782141 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 8359262041 + 34778520100 = 91429^2 + 186490^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-43137782141 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43137782143) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 743754836 + ... + 743754893.

It is an arithmetic number, because the mean of its divisors is an integer number (11156322975).

Almost surely, 2^43137782141 is an apocalyptic number.

It is an amenable number.

43137782141 is a deficient number, since it is larger than the sum of its proper divisors (1487509759).

43137782141 is a wasteful number, since it uses less digits than its factorization.

43137782141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1487509758.

The product of its digits is 112896, while the sum is 41.

The spelling of 43137782141 in words is "forty-three billion, one hundred thirty-seven million, seven hundred eighty-two thousand, one hundred forty-one".