40123204512013 has 16 divisors (see below), whose sum is σ = 46737804597120. Its totient is φ = 33735558076416.

The previous prime is 40123204511963. The next prime is 40123204512059. The reversal of 40123204512013 is 31021540232104.

40123204512013 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 40123204512013 - 2²⁵ = 40123170957581 is a prime.

It is a super-2 number, since 2×40123204512013² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40123204812013) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 261390583 + ... + 261544036.

It is an arithmetic number, because the mean of its divisors is an integer number (2921112787320).

Almost surely, 2^{40123204512013} is an apocalyptic number.

It is an amenable number.

40123204512013 is a deficient number, since it is larger than the sum of its proper divisors (6614600085107).

40123204512013 is a wasteful number, since it uses less digits than its factorization.

40123204512013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 522934836.

The product of its (nonzero) digits is 5760, while the sum is 28.

Adding to 40123204512013 its reverse (31021540232104), we get a palindrome (71144744744117).

The spelling of 40123204512013 in words is "forty trillion, one hundred twenty-three billion, two hundred four million, five hundred twelve thousand, thirteen".