40646918472 has 16 divisors (see below), whose sum is σ = 101617296240. Its totient is φ = 13548972816.

The previous prime is 40646918467. The next prime is 40646918479. The reversal of 40646918472 is 27481964604.

It is a happy number.

40646918472 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (40646918479) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 846810778 + ... + 846810825.

It is an arithmetic number, because the mean of its divisors is an integer number (6351081015).

Almost surely, 2^40646918472 is an apocalyptic number.

It is an amenable number.

40646918472 is an abundant number, since it is smaller than the sum of its proper divisors (60970377768).

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

40646918472 is a wasteful number, since it uses less digits than its factorization.

40646918472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1693621612 (or 1693621608 counting only the distinct ones).

The product of its (nonzero) digits is 2322432, while the sum is 51.

The spelling of 40646918472 in words is "forty billion, six hundred forty-six million, nine hundred eighteen thousand, four hundred seventy-two".