42555664551 has 16 divisors (see below), whose sum is σ = 57889437696. Its totient is φ = 27797611296.

The previous prime is 42555664471. The next prime is 42555664577. The reversal of 42555664551 is 15546655524.

42555664551 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 42555664551 - 2¹¹ = 42555662503 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 42555664551.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42555664051) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 61975 + ... + 298248.

It is an arithmetic number, because the mean of its divisors is an integer number (3618089856).

Almost surely, 2^42555664551 is an apocalyptic number.

42555664551 is a deficient number, since it is larger than the sum of its proper divisors (15333773145).

42555664551 is a wasteful number, since it uses less digits than its factorization.

42555664551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 361022.

The product of its digits is 3600000, while the sum is 48.

The spelling of 42555664551 in words is "forty-two billion, five hundred fifty-five million, six hundred sixty-four thousand, five hundred fifty-one".