40889865937 has 2 divisors, whose sum is σ = 40889865938. Its totient is φ = 40889865936.

The previous prime is 40889865917. The next prime is 40889865941. The reversal of 40889865937 is 73956898804.

40889865937 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 39791871441 + 1097994496 = 199479^2 + 33136^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40889865937 is a prime.

It is a super-2 number, since 2×40889865937² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (40889865917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20444932968 + 20444932969.

It is an arithmetic number, because the mean of its divisors is an integer number (20444932969).

Almost surely, 2^40889865937 is an apocalyptic number.

It is an amenable number.

40889865937 is a deficient number, since it is larger than the sum of its proper divisors (1).

40889865937 is an equidigital number, since it uses as much as digits as its factorization.

40889865937 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 104509440, while the sum is 67.

The spelling of 40889865937 in words is "forty billion, eight hundred eighty-nine million, eight hundred sixty-five thousand, nine hundred thirty-seven".