40639937193 has 16 divisors (see below), whose sum is σ = 62825024640. Its totient is φ = 25915321872.

The previous prime is 40639937189. The next prime is 40639937201. The reversal of 40639937193 is 39173993604.

40639937193 is a `hidden beast` number, since 40 + 63 + 99 + 371 + 93 = 666.

40639937193 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 40639937193 - 2² = 40639937189 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40639937113) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32720746 + ... + 32721987.

It is an arithmetic number, because the mean of its divisors is an integer number (3926564040).

Almost surely, 2^40639937193 is an apocalyptic number.

It is an amenable number.

40639937193 is a deficient number, since it is larger than the sum of its proper divisors (22185087447).

40639937193 is a wasteful number, since it uses less digits than its factorization.

40639937193 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65442765 (or 65442759 counting only the distinct ones).

The product of its (nonzero) digits is 3306744, while the sum is 54.

The spelling of 40639937193 in words is "forty billion, six hundred thirty-nine million, nine hundred thirty-seven thousand, one hundred ninety-three".