40381037843 has 2 divisors, whose sum is σ = 40381037844. Its totient is φ = 40381037842.

The previous prime is 40381037803. The next prime is 40381037869. The reversal of 40381037843 is 34873018304.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40381037843 - 2²² = 40376843539 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 40381037843.

It is not a weakly prime, because it can be changed into another prime (40381037803) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20190518921 + 20190518922.

It is an arithmetic number, because the mean of its divisors is an integer number (20190518922).

Almost surely, 2^40381037843 is an apocalyptic number.

40381037843 is a deficient number, since it is larger than the sum of its proper divisors (1).

40381037843 is an equidigital number, since it uses as much as digits as its factorization.

40381037843 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 193536, while the sum is 41.

The spelling of 40381037843 in words is "forty billion, three hundred eighty-one million, thirty-seven thousand, eight hundred forty-three".