40121736012745 has 4 divisors (see below), whose sum is σ = 48146083215300. Its totient is φ = 32097388810192.

The previous prime is 40121736012691. The next prime is 40121736012823. The reversal of 40121736012745 is 54721063712104.

40121736012745 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 28838478801609 + 11283257211136 = 5370147^2 + 3359056^2 .

It is a cyclic number.

It is not a de Polignac number, because 40121736012745 - 2²³ = 40121727624137 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4012173601270 + ... + 4012173601279.

It is an arithmetic number, because the mean of its divisors is an integer number (12036520803825).

Almost surely, 2^{40121736012745} is an apocalyptic number.

It is an amenable number.

40121736012745 is a deficient number, since it is larger than the sum of its proper divisors (8024347202555).

40121736012745 is an equidigital number, since it uses as much as digits as its factorization.

40121736012745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8024347202554.

The product of its (nonzero) digits is 282240, while the sum is 43.

Adding to 40121736012745 its reverse (54721063712104), we get a palindrome (94842799724849).

The spelling of 40121736012745 in words is "forty trillion, one hundred twenty-one billion, seven hundred thirty-six million, twelve thousand, seven hundred forty-five".