40289859061 has 4 divisors (see below), whose sum is σ = 40290579052. Its totient is φ = 40289139072.

The previous prime is 40289858941. The next prime is 40289859067. The reversal of 40289859061 is 16095898204.

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 39613338961 + 676520100 = 199031^2 + 26010^2 .

It is a cyclic number.

It is not a de Polignac number, because 40289859061 - 2⁷ = 40289858933 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 (40289859067) 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, 268266 + ... + 390571.

It is an arithmetic number, because the mean of its divisors is an integer number (10072644763).

Almost surely, 2^40289859061 is an apocalyptic number.

It is an amenable number.

40289859061 is a deficient number, since it is larger than the sum of its proper divisors (719991).

40289859061 is an equidigital number, since it uses as much as digits as its factorization.

40289859061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 719990.

The product of its (nonzero) digits is 1244160, while the sum is 52.

The spelling of 40289859061 in words is "forty billion, two hundred eighty-nine million, eight hundred fifty-nine thousand, sixty-one".