40051563817 has 8 divisors (see below), whose sum is σ = 42166404000. Its totient is φ = 37937409984.

The previous prime is 40051563809. The next prime is 40051563821. The reversal of 40051563817 is 71836515004.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 40051563817 - 2³ = 40051563809 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 40051563817.

It is not an unprimeable number, because it can be changed into a prime (40051563887) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49567 + ... + 287332.

It is an arithmetic number, because the mean of its divisors is an integer number (5270800500).

Almost surely, 2^40051563817 is an apocalyptic number.

It is an amenable number.

40051563817 is a deficient number, since it is larger than the sum of its proper divisors (2114840183).

40051563817 is a wasteful number, since it uses less digits than its factorization.

40051563817 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 343175.

The product of its (nonzero) digits is 100800, while the sum is 40.

The spelling of 40051563817 in words is "forty billion, fifty-one million, five hundred sixty-three thousand, eight hundred seventeen".