40321685679 has 16 divisors (see below), whose sum is σ = 58749667200. Its totient is φ = 24395742560.

The previous prime is 40321685653. The next prime is 40321685683. The reversal of 40321685679 is 97658612304.

40321685679 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 40321685679 - 2⁹ = 40321685167 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40321685699) 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, 1021404 + ... + 1060145.

It is an arithmetic number, because the mean of its divisors is an integer number (3671854200).

It is a 1-persistent number, because it is pandigital, but 2⋅40321685679 = 80643371358 is not.

Almost surely, 2^40321685679 is an apocalyptic number.

40321685679 is a deficient number, since it is larger than the sum of its proper divisors (18427981521).

40321685679 is a wasteful number, since it uses less digits than its factorization.

40321685679 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2082150.

The product of its (nonzero) digits is 2177280, while the sum is 51.

The spelling of 40321685679 in words is "forty billion, three hundred twenty-one million, six hundred eighty-five thousand, six hundred seventy-nine".