42144536515 has 4 divisors (see below), whose sum is σ = 50573443824. Its totient is φ = 33715629208.

The previous prime is 42144536507. The next prime is 42144536521. The reversal of 42144536515 is 51563544124.

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 42144536515 - 2³ = 42144536507 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4214453647 + ... + 4214453656.

It is an arithmetic number, because the mean of its divisors is an integer number (12643360956).

Almost surely, 2^42144536515 is an apocalyptic number.

42144536515 is a deficient number, since it is larger than the sum of its proper divisors (8428907309).

42144536515 is an equidigital number, since it uses as much as digits as its factorization.

42144536515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8428907308.

The product of its digits is 288000, while the sum is 40.

The spelling of 42144536515 in words is "forty-two billion, one hundred forty-four million, five hundred thirty-six thousand, five hundred fifteen".