40020236173111 has 4 divisors (see below), whose sum is σ = 40023013249224. Its totient is φ = 40017459097000.

The previous prime is 40020236173007. The next prime is 40020236173117. The reversal of 40020236173111 is 11137163202004.

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-40020236173111 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 (40020236173117) 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, 1388516440 + ... + 1388545261.

It is an arithmetic number, because the mean of its divisors is an integer number (10005753312306).

Almost surely, 2^{40020236173111} is an apocalyptic number.

40020236173111 is a deficient number, since it is larger than the sum of its proper divisors (2777076113).

40020236173111 is a wasteful number, since it uses less digits than its factorization.

40020236173111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2777076112.

The product of its (nonzero) digits is 6048, while the sum is 31.

Adding to 40020236173111 its reverse (11137163202004), we get a palindrome (51157399375115).

The spelling of 40020236173111 in words is "forty trillion, twenty billion, two hundred thirty-six million, one hundred seventy-three thousand, one hundred eleven".