40205603645 has 8 divisors (see below), whose sum is σ = 48254421600. Its totient is φ = 32159351440.

The previous prime is 40205603621. The next prime is 40205603663. The reversal of 40205603645 is 54630650204.

It is a happy number.

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

It is not a de Polignac number, because 40205603645 - 2³⁴ = 23025734461 is a prime.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 606791 + ... + 669780.

It is an arithmetic number, because the mean of its divisors is an integer number (6031802700).

Almost surely, 2^40205603645 is an apocalyptic number.

It is an amenable number.

40205603645 is a deficient number, since it is larger than the sum of its proper divisors (8048817955).

40205603645 is a wasteful number, since it uses less digits than its factorization.

40205603645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1282875.

The product of its (nonzero) digits is 86400, while the sum is 35.

The spelling of 40205603645 in words is "forty billion, two hundred five million, six hundred three thousand, six hundred forty-five".