40063665851 has 16 divisors (see below), whose sum is σ = 45679062240. Its totient is φ = 34803041280.

The previous prime is 40063665847. The next prime is 40063665857. The reversal of 40063665851 is 15856636004.

It is not a de Polignac number, because 40063665851 - 2² = 40063665847 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40063665857) 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, 616436 + ... + 678321.

It is an arithmetic number, because the mean of its divisors is an integer number (2854941390).

Almost surely, 2^40063665851 is an apocalyptic number.

40063665851 is a deficient number, since it is larger than the sum of its proper divisors (5615396389).

40063665851 is a wasteful number, since it uses less digits than its factorization.

40063665851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1294894.

The product of its (nonzero) digits is 518400, while the sum is 44.

The spelling of 40063665851 in words is "forty billion, sixty-three million, six hundred sixty-five thousand, eight hundred fifty-one".