40104214515121 has 4 divisors (see below), whose sum is σ = 40653587316772. Its totient is φ = 39554841713472.

The previous prime is 40104214515119. The next prime is 40104214515137. The reversal of 40104214515121 is 12151541240104.

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 26409115440400 + 13695099074721 = 5138980^2 + 3700689^2 .

It is a cyclic number.

It is not a de Polignac number, because 40104214515121 - 2¹ = 40104214515119 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40104214515161) 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, 274686400716 + ... + 274686400861.

It is an arithmetic number, because the mean of its divisors is an integer number (10163396829193).

Almost surely, 2^{40104214515121} is an apocalyptic number.

It is an amenable number.

40104214515121 is a deficient number, since it is larger than the sum of its proper divisors (549372801651).

40104214515121 is an equidigital number, since it uses as much as digits as its factorization.

40104214515121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 549372801650.

The product of its (nonzero) digits is 6400, while the sum is 31.

Adding to 40104214515121 its reverse (12151541240104), we get a palindrome (52255755755225).

The spelling of 40104214515121 in words is "forty trillion, one hundred four billion, two hundred fourteen million, five hundred fifteen thousand, one hundred twenty-one".