40645090898 has 8 divisors (see below), whose sum is σ = 60969892620. Its totient is φ = 20321793360.

The previous prime is 40645090879. The next prime is 40645090907. The reversal of 40645090898 is 89809054604.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 39890874529 + 754216369 = 199727^2 + 27463^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 305873 + ... + 418148.

Almost surely, 2^40645090898 is an apocalyptic number.

40645090898 is a deficient number, since it is larger than the sum of its proper divisors (20324801722).

40645090898 is a wasteful number, since it uses less digits than its factorization.

40645090898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 752092.

The product of its (nonzero) digits is 2488320, while the sum is 53.

The spelling of 40645090898 in words is "forty billion, six hundred forty-five million, ninety thousand, eight hundred ninety-eight".