40038140276861 has 4 divisors (see below), whose sum is σ = 40038168356412. Its totient is φ = 40038112197312.

The previous prime is 40038140276831. The next prime is 40038140276903. The reversal of 40038140276861 is 16867204183004.

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

It can be written as a sum of positive squares in 2 ways, for example, as 3105415803961 + 36932724472900 = 1762219^2 + 6077230^2 .

It is a cyclic number.

It is not a de Polignac number, because 40038140276861 - 2³⁴ = 40020960407677 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 (40038140276831) 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, 11779676 + ... + 14793141.

It is an arithmetic number, because the mean of its divisors is an integer number (10009542089103).

Almost surely, 2^{40038140276861} is an apocalyptic number.

It is an amenable number.

40038140276861 is a deficient number, since it is larger than the sum of its proper divisors (28079551).

40038140276861 is a wasteful number, since it uses less digits than its factorization.

40038140276861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28079550.

The product of its (nonzero) digits is 1548288, while the sum is 50.

The spelling of 40038140276861 in words is "forty trillion, thirty-eight billion, one hundred forty million, two hundred seventy-six thousand, eight hundred sixty-one".