40689143208 has 128 divisors (see below), whose sum is σ = 129225600000. Its totient is φ = 11620635840.

The previous prime is 40689143177. The next prime is 40689143227. The reversal of 40689143208 is 80234198604.

It is a happy number.

40689143208 is a `hidden beast` number, since 406 + 89 + 143 + 20 + 8 = 666.

It is a super-2 number, since 2×40689143208² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5286643 + ... + 5294333.

It is an arithmetic number, because the mean of its divisors is an integer number (1009575000).

Almost surely, 2^40689143208 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40689143208, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (64612800000).

40689143208 is an abundant number, since it is smaller than the sum of its proper divisors (88536456792).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40689143208 is a wasteful number, since it uses less digits than its factorization.

40689143208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11212 (or 11202 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 45.

The spelling of 40689143208 in words is "forty billion, six hundred eighty-nine million, one hundred forty-three thousand, two hundred eight".