40120510115 has 32 divisors (see below), whose sum is σ = 57443751936. Its totient is φ = 26301749760.

The previous prime is 40120510109. The next prime is 40120510139. The reversal of 40120510115 is 51101502104.

It is not a de Polignac number, because 40120510115 - 2¹⁶ = 40120444579 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1728074 + ... + 1751136.

It is an arithmetic number, because the mean of its divisors is an integer number (1795117248).

Almost surely, 2^40120510115 is an apocalyptic number.

40120510115 is a deficient number, since it is larger than the sum of its proper divisors (17323241821).

40120510115 is a wasteful number, since it uses less digits than its factorization.

40120510115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25259.

The product of its (nonzero) digits is 200, while the sum is 20.

The spelling of 40120510115 in words is "forty billion, one hundred twenty million, five hundred ten thousand, one hundred fifteen".