42015663455 has 16 divisors (see below), whose sum is σ = 53398639584. Its totient is φ = 31627008000.

The previous prime is 42015663407. The next prime is 42015663461. The reversal of 42015663455 is 55436651024.

It is a happy number.

It is not a de Polignac number, because 42015663455 - 2²⁰ = 42014614879 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 270455 + ... + 396455.

It is an arithmetic number, because the mean of its divisors is an integer number (3337414974).

Almost surely, 2^42015663455 is an apocalyptic number.

42015663455 is a deficient number, since it is larger than the sum of its proper divisors (11382976129).

42015663455 is a wasteful number, since it uses less digits than its factorization.

42015663455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129946.

The product of its (nonzero) digits is 432000, while the sum is 41.

The spelling of 42015663455 in words is "forty-two billion, fifteen million, six hundred sixty-three thousand, four hundred fifty-five".