40260022721 has 4 divisors (see below), whose sum is σ = 40650896832. Its totient is φ = 39869148612.

The previous prime is 40260022711. The next prime is 40260022729. The reversal of 40260022721 is 12722006204.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 40260022721 - 2¹⁴ = 40260006337 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40260022729) 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, 195436901 + ... + 195437106.

It is an arithmetic number, because the mean of its divisors is an integer number (10162724208).

Almost surely, 2^40260022721 is an apocalyptic number.

It is an amenable number.

40260022721 is a deficient number, since it is larger than the sum of its proper divisors (390874111).

40260022721 is a wasteful number, since it uses less digits than its factorization.

40260022721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 390874110.

The product of its (nonzero) digits is 2688, while the sum is 26.

Adding to 40260022721 its reverse (12722006204), we get a palindrome (52982028925).

The spelling of 40260022721 in words is "forty billion, two hundred sixty million, twenty-two thousand, seven hundred twenty-one".