40603810906 has 4 divisors (see below), whose sum is σ = 60905716362. Its totient is φ = 20301905452.

The previous prime is 40603810889. The next prime is 40603810913. The reversal of 40603810906 is 60901830604.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 40600235025 + 3575881 = 201495^2 + 1891^2 .

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 as a sum of consecutive naturals, namely, 10150952725 + ... + 10150952728.

Almost surely, 2^40603810906 is an apocalyptic number.

40603810906 is a deficient number, since it is larger than the sum of its proper divisors (20301905456).

40603810906 is a wasteful number, since it uses less digits than its factorization.

40603810906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20301905455.

The product of its (nonzero) digits is 31104, while the sum is 37.

The spelling of 40603810906 in words is "forty billion, six hundred three million, eight hundred ten thousand, nine hundred six".