40605855856 has 10 divisors (see below), whose sum is σ = 78673845752. Its totient is φ = 20302927920.

The previous prime is 40605855821. The next prime is 40605855859. The reversal of 40605855856 is 65855850604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40605855859) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1268932980 + ... + 1268933011.

Almost surely, 2^40605855856 is an apocalyptic number.

It is an amenable number.

40605855856 is a deficient number, since it is larger than the sum of its proper divisors (38067989896).

40605855856 is a wasteful number, since it uses less digits than its factorization.

40605855856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2537865999 (or 2537865993 counting only the distinct ones).

The product of its (nonzero) digits is 5760000, while the sum is 52.

The spelling of 40605855856 in words is "forty billion, six hundred five million, eight hundred fifty-five thousand, eight hundred fifty-six".