40040844841 has 4 divisors (see below), whose sum is σ = 40065306372. Its totient is φ = 40016383312.

The previous prime is 40040844827. The next prime is 40040844869. The reversal of 40040844841 is 14844804004.

40040844841 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 8506188441 + 31534656400 = 92229^2 + 177580^2 .

It is a cyclic number.

It is not a de Polignac number, because 40040844841 - 2²⁵ = 40007290409 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 40040844841.

It is not an unprimeable number, because it can be changed into a prime (40040844871) 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, 12228310 + ... + 12231583.

It is an arithmetic number, because the mean of its divisors is an integer number (10016326593).

Almost surely, 2^40040844841 is an apocalyptic number.

It is an amenable number.

40040844841 is a deficient number, since it is larger than the sum of its proper divisors (24461531).

40040844841 is a wasteful number, since it uses less digits than its factorization.

40040844841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24461530.

The product of its (nonzero) digits is 65536, while the sum is 37.

The spelling of 40040844841 in words is "forty billion, forty million, eight hundred forty-four thousand, eight hundred forty-one".