40188218907 has 16 divisors (see below), whose sum is σ = 54025614720. Its totient is φ = 26571729600.

The previous prime is 40188218899. The next prime is 40188218911. The reversal of 40188218907 is 70981288104.

It is not a de Polignac number, because 40188218907 - 2³ = 40188218899 is a prime.

It is a super-3 number, since 3×40188218907³ (a number of 33 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (40188218207) 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, 646644 + ... + 706062.

It is an arithmetic number, because the mean of its divisors is an integer number (3376600920).

Almost surely, 2^40188218907 is an apocalyptic number.

40188218907 is a deficient number, since it is larger than the sum of its proper divisors (13837395813).

40188218907 is a wasteful number, since it uses less digits than its factorization.

40188218907 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61274.

The product of its (nonzero) digits is 258048, while the sum is 48.

The spelling of 40188218907 in words is "forty billion, one hundred eighty-eight million, two hundred eighteen thousand, nine hundred seven".