41518581887 has 4 divisors (see below), whose sum is σ = 41519984520. Its totient is φ = 41517179256.

The previous prime is 41518581877. The next prime is 41518581911. The reversal of 41518581887 is 78818581514.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 41518581887 - 2⁸ = 41518581631 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (41518581827) 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, 655937 + ... + 716442.

It is an arithmetic number, because the mean of its divisors is an integer number (10379996130).

Almost surely, 2^41518581887 is an apocalyptic number.

41518581887 is a deficient number, since it is larger than the sum of its proper divisors (1402633).

41518581887 is a wasteful number, since it uses less digits than its factorization.

41518581887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1402632.

The product of its digits is 2867200, while the sum is 56.

The spelling of 41518581887 in words is "forty-one billion, five hundred eighteen million, five hundred eighty-one thousand, eight hundred eighty-seven".