40108617873581 has 4 divisors (see below), whose sum is σ = 40108705486464. Its totient is φ = 40108530260700.

The previous prime is 40108617873563. The next prime is 40108617873587. The reversal of 40108617873581 is 18537871680104.

It is a happy number.

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 a de Polignac number, because none of the positive numbers 2^k-40108617873581 is a prime.

It is a super-2 number, since 2×40108617873581² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 40108617873581.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40108617873587) 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, 43116125 + ... + 44036546.

It is an arithmetic number, because the mean of its divisors is an integer number (10027176371616).

Almost surely, 2^{40108617873581} is an apocalyptic number.

It is an amenable number.

40108617873581 is a deficient number, since it is larger than the sum of its proper divisors (87612883).

40108617873581 is an equidigital number, since it uses as much as digits as its factorization.

40108617873581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87612882.

The product of its (nonzero) digits is 9031680, while the sum is 59.

The spelling of 40108617873581 in words is "forty trillion, one hundred eight billion, six hundred seventeen million, eight hundred seventy-three thousand, five hundred eighty-one".