40381613579 has 2 divisors, whose sum is σ = 40381613580. Its totient is φ = 40381613578.

The previous prime is 40381613563. The next prime is 40381613593. The reversal of 40381613579 is 97531618304.

It is a happy number.

40381613579 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40381613579 - 2⁴ = 40381613563 is a prime.

It is not a weakly prime, because it can be changed into another prime (40381613509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20190806789 + 20190806790.

It is an arithmetic number, because the mean of its divisors is an integer number (20190806790).

Almost surely, 2^40381613579 is an apocalyptic number.

40381613579 is a deficient number, since it is larger than the sum of its proper divisors (1).

40381613579 is an equidigital number, since it uses as much as digits as its factorization.

40381613579 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 544320, while the sum is 47.

The spelling of 40381613579 in words is "forty billion, three hundred eighty-one million, six hundred thirteen thousand, five hundred seventy-nine".