40685783601 has 32 divisors (see below), whose sum is σ = 56664092160. Its totient is φ = 25943583744.

The previous prime is 40685783597. The next prime is 40685783657. The reversal of 40685783601 is 10638758604.

40685783601 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 40685783601 - 2² = 40685783597 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (40685781601) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2033221 + ... + 2053133.

It is an arithmetic number, because the mean of its divisors is an integer number (1770752880).

Almost surely, 2^40685783601 is an apocalyptic number.

It is an amenable number.

40685783601 is a deficient number, since it is larger than the sum of its proper divisors (15978308559).

40685783601 is a wasteful number, since it uses less digits than its factorization.

40685783601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20265.

The product of its (nonzero) digits is 967680, while the sum is 48.

The spelling of 40685783601 in words is "forty billion, six hundred eighty-five million, seven hundred eighty-three thousand, six hundred one".