4040236877221 has 4 divisors (see below), whose sum is σ = 4077303270700. Its totient is φ = 4003170483744.

The previous prime is 4040236877213. The next prime is 4040236877227. The reversal of 4040236877221 is 1227786320404.

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 3688362501121 + 351874376100 = 1920511^2 + 593190^2 .

It is a cyclic number.

It is not a de Polignac number, because 4040236877221 - 2³ = 4040236877213 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 (4040236877227) 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, 18533196576 + ... + 18533196793.

It is an arithmetic number, because the mean of its divisors is an integer number (1019325817675).

Almost surely, 2^{4040236877221} is an apocalyptic number.

It is an amenable number.

4040236877221 is a deficient number, since it is larger than the sum of its proper divisors (37066393479).

4040236877221 is a wasteful number, since it uses less digits than its factorization.

4040236877221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37066393478.

The product of its (nonzero) digits is 903168, while the sum is 46.

The spelling of 4040236877221 in words is "four trillion, forty billion, two hundred thirty-six million, eight hundred seventy-seven thousand, two hundred twenty-one".