4040721216001 has 4 divisors (see below), whose sum is σ = 4055308657492. Its totient is φ = 4026133774512.

The previous prime is 4040721215969. The next prime is 4040721216067. The reversal of 4040721216001 is 1006121270404.

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 369665216001 + 3671056000000 = 608001^2 + 1916000^2 .

It is a cyclic number.

It is not a de Polignac number, because 4040721216001 - 2⁵ = 4040721215969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4040721216101) 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, 7293720330 + ... + 7293720883.

It is an arithmetic number, because the mean of its divisors is an integer number (1013827164373).

Almost surely, 2^{4040721216001} is an apocalyptic number.

It is an amenable number.

4040721216001 is a deficient number, since it is larger than the sum of its proper divisors (14587441491).

4040721216001 is a wasteful number, since it uses less digits than its factorization.

4040721216001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14587441490.

The product of its (nonzero) digits is 2688, while the sum is 28.

Adding to 4040721216001 its reverse (1006121270404), we get a palindrome (5046842486405).

The spelling of 4040721216001 in words is "four trillion, forty billion, seven hundred twenty-one million, two hundred sixteen thousand, one".