40108642013651 has 4 divisors (see below), whose sum is σ = 40110775130472. Its totient is φ = 40106508896832.

The previous prime is 40108642013623. The next prime is 40108642013717. The reversal of 40108642013651 is 15631024680104.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40108642013651 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40108642013599 and 40108642013608.

It is not an unprimeable number, because it can be changed into a prime (40108642013051) 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, 1066530206 + ... + 1066567811.

It is an arithmetic number, because the mean of its divisors is an integer number (10027693782618).

Almost surely, 2^{40108642013651} is an apocalyptic number.

40108642013651 is a deficient number, since it is larger than the sum of its proper divisors (2133116821).

40108642013651 is a wasteful number, since it uses less digits than its factorization.

40108642013651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2133116820.

The product of its (nonzero) digits is 138240, while the sum is 41.

Adding to 40108642013651 its reverse (15631024680104), we get a palindrome (55739666693755).

The spelling of 40108642013651 in words is "forty trillion, one hundred eight billion, six hundred forty-two million, thirteen thousand, six hundred fifty-one".