40120052015 has 16 divisors (see below), whose sum is σ = 51047889120. Its totient is φ = 30184819200.

The previous prime is 40120051997. The next prime is 40120052017. The reversal of 40120052015 is 51025002104.

It is not a de Polignac number, because 40120052015 - 2¹⁰ = 40120050991 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40120052017) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1528286 + ... + 1554315.

It is an arithmetic number, because the mean of its divisors is an integer number (3190493070).

Almost surely, 2^40120052015 is an apocalyptic number.

40120052015 is a deficient number, since it is larger than the sum of its proper divisors (10927837105).

40120052015 is a wasteful number, since it uses less digits than its factorization.

40120052015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3082762.

The product of its (nonzero) digits is 400, while the sum is 20.

Adding to 40120052015 its reverse (51025002104), we get a palindrome (91145054119).

The spelling of 40120052015 in words is "forty billion, one hundred twenty million, fifty-two thousand, fifteen".