40381613569 has 4 divisors (see below), whose sum is σ = 44052669360. Its totient is φ = 36710557780.

The previous prime is 40381613563. The next prime is 40381613579. The reversal of 40381613569 is 96531618304.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 40381613569 - 2⁵ = 40381613537 is a prime.

It is a super-2 number, since 2×40381613569² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40381613563) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1835527879 + ... + 1835527900.

It is an arithmetic number, because the mean of its divisors is an integer number (11013167340).

Almost surely, 2^40381613569 is an apocalyptic number.

It is an amenable number.

40381613569 is a deficient number, since it is larger than the sum of its proper divisors (3671055791).

40381613569 is a wasteful number, since it uses less digits than its factorization.

40381613569 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3671055790.

The product of its (nonzero) digits is 466560, while the sum is 46.

The spelling of 40381613569 in words is "forty billion, three hundred eighty-one million, six hundred thirteen thousand, five hundred sixty-nine".