42555621463 has 4 divisors (see below), whose sum is σ = 42556037488. Its totient is φ = 42555205440.

The previous prime is 42555621439. The next prime is 42555621481. The reversal of 42555621463 is 36412655524.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 42555621463 - 2²⁵ = 42522067031 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42555621763) 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, 63943 + ... + 298663.

It is an arithmetic number, because the mean of its divisors is an integer number (10639009372).

Almost surely, 2^42555621463 is an apocalyptic number.

42555621463 is a deficient number, since it is larger than the sum of its proper divisors (416025).

42555621463 is a wasteful number, since it uses less digits than its factorization.

42555621463 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 416024.

The product of its digits is 864000, while the sum is 43.

The spelling of 42555621463 in words is "forty-two billion, five hundred fifty-five million, six hundred twenty-one thousand, four hundred sixty-three".