40103205253506 has 40 divisors (see below), whose sum is σ = 90516804770700. Its totient is φ = 13270160368512.

The previous prime is 40103205253499. The next prime is 40103205253519. The reversal of 40103205253506 is 60535250230104.

40103205253506 is a `hidden beast` number, since 4 + 0 + 103 + 20 + 5 + 25 + 3 + 506 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 40036509608481 + 66695645025 = 6327441^2 + 258255^2 .

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 in 19 ways as a sum of consecutive naturals, for example, 903447331 + ... + 903491718.

Almost surely, 2^{40103205253506} is an apocalyptic number.

40103205253506 is an abundant number, since it is smaller than the sum of its proper divisors (50413599517194).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40103205253506 is a wasteful number, since it uses less digits than its factorization.

40103205253506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1806939200 (or 1806939191 counting only the distinct ones).

The product of its (nonzero) digits is 108000, while the sum is 36.

The spelling of 40103205253506 in words is "forty trillion, one hundred three billion, two hundred five million, two hundred fifty-three thousand, five hundred six".