40989496065 has 16 divisors (see below), whose sum is σ = 74952221568. Its totient is φ = 18738055296.

The previous prime is 40989496057. The next prime is 40989496091. The reversal of 40989496065 is 56069498904.

It is not a de Polignac number, because 40989496065 - 2³ = 40989496057 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 195187972 + ... + 195188181.

It is an arithmetic number, because the mean of its divisors is an integer number (4684513848).

Almost surely, 2^40989496065 is an apocalyptic number.

It is an amenable number.

40989496065 is a deficient number, since it is larger than the sum of its proper divisors (33962725503).

40989496065 is a wasteful number, since it uses less digits than its factorization.

40989496065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 390376168.

The product of its (nonzero) digits is 16796160, while the sum is 60.

It can be divided in two parts, 4098949 and 6065, that added together give a palindrome (4105014).

The spelling of 40989496065 in words is "forty billion, nine hundred eighty-nine million, four hundred ninety-six thousand, sixty-five".