42544145015 has 16 divisors (see below), whose sum is σ = 51311907840. Its totient is φ = 33863041440.

The previous prime is 42544144991. The next prime is 42544145053. The reversal of 42544145015 is 51054144524.

It is not a de Polignac number, because 42544145015 - 2³² = 38249177719 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 980102 + ... + 1022588.

It is an arithmetic number, because the mean of its divisors is an integer number (3206994240).

Almost surely, 2^42544145015 is an apocalyptic number.

42544145015 is a deficient number, since it is larger than the sum of its proper divisors (8767762825).

42544145015 is a wasteful number, since it uses less digits than its factorization.

42544145015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43502.

The product of its (nonzero) digits is 64000, while the sum is 35.

Adding to 42544145015 its reverse (51054144524), we get a palindrome (93598289539).

The spelling of 42544145015 in words is "forty-two billion, five hundred forty-four million, one hundred forty-five thousand, fifteen".