40434442412515 has 4 divisors (see below), whose sum is σ = 48521330895024. Its totient is φ = 32347553930008.

The previous prime is 40434442412509. The next prime is 40434442412519. The reversal of 40434442412515 is 51521424443404.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 40434442412515 - 2⁷ = 40434442412387 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40434442412519) 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, 4043444241247 + ... + 4043444241256.

It is an arithmetic number, because the mean of its divisors is an integer number (12130332723756).

Almost surely, 2^{40434442412515} is an apocalyptic number.

40434442412515 is a deficient number, since it is larger than the sum of its proper divisors (8086888482509).

40434442412515 is an equidigital number, since it uses as much as digits as its factorization.

40434442412515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8086888482508.

The product of its (nonzero) digits is 1228800, while the sum is 43.

Adding to 40434442412515 its reverse (51521424443404), we get a palindrome (91955866855919).

The spelling of 40434442412515 in words is "forty trillion, four hundred thirty-four billion, four hundred forty-two million, four hundred twelve thousand, five hundred fifteen".