40108618113685 has 32 divisors (see below), whose sum is σ = 53334379613952. Its totient is φ = 28711238330880.

The previous prime is 40108618113643. The next prime is 40108618113769. The reversal of 40108618113685 is 58631181680104.

It is a de Polignac number, because none of the positive numbers 2^k-40108618113685 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8301054 + ... + 12211663.

It is an arithmetic number, because the mean of its divisors is an integer number (1666699362936).

Almost surely, 2^{40108618113685} is an apocalyptic number.

It is an amenable number.

40108618113685 is a deficient number, since it is larger than the sum of its proper divisors (13225761500267).

40108618113685 is a wasteful number, since it uses less digits than its factorization.

40108618113685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20513293.

The product of its (nonzero) digits is 1105920, while the sum is 52.

Adding to 40108618113685 its reverse (58631181680104), we get a palindrome (98739799793789).

The spelling of 40108618113685 in words is "forty trillion, one hundred eight billion, six hundred eighteen million, one hundred thirteen thousand, six hundred eighty-five".