40209866312 has 32 divisors (see below), whose sum is σ = 93997091520. Its totient is φ = 15666181440.

The previous prime is 40209866309. The next prime is 40209866363. The reversal of 40209866312 is 21366890204.

40209866312 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 40209866312.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32637263 + ... + 32638494.

It is an arithmetic number, because the mean of its divisors is an integer number (2937409110).

Almost surely, 2^40209866312 is an apocalyptic number.

It is an amenable number.

40209866312 is an abundant number, since it is smaller than the sum of its proper divisors (53787225208).

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

40209866312 is a wasteful number, since it uses less digits than its factorization.

40209866312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65275781 (or 65275777 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 41.

The spelling of 40209866312 in words is "forty billion, two hundred nine million, eight hundred sixty-six thousand, three hundred twelve".