40381613563 has 2 divisors, whose sum is σ = 40381613564. Its totient is φ = 40381613562.

The previous prime is 40381613543. The next prime is 40381613579. The reversal of 40381613563 is 36531618304.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40381613563 is a prime.

It is a super-3 number, since 3×40381613563³ (a number of 33 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (40381613543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20190806781 + 20190806782.

It is an arithmetic number, because the mean of its divisors is an integer number (20190806782).

Almost surely, 2^40381613563 is an apocalyptic number.

40381613563 is a deficient number, since it is larger than the sum of its proper divisors (1).

40381613563 is an equidigital number, since it uses as much as digits as its factorization.

40381613563 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 155520, while the sum is 40.

The spelling of 40381613563 in words is "forty billion, three hundred eighty-one million, six hundred thirteen thousand, five hundred sixty-three".