42205054551 has 8 divisors (see below), whose sum is σ = 61389170304. Its totient is φ = 25578820920.

The previous prime is 42205054547. The next prime is 42205054553. The reversal of 42205054551 is 15545050224.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 42205054551 - 2² = 42205054547 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33), and also a Moran number because the ratio is a prime number: 1278941047 = 42205054551 / (4 + 2 + 2 + 0 + 5 + 0 + 5 + 4 + 5 + 5 + 1).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42205054553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 639470491 + ... + 639470556.

It is an arithmetic number, because the mean of its divisors is an integer number (7673646288).

Almost surely, 2^42205054551 is an apocalyptic number.

42205054551 is a deficient number, since it is larger than the sum of its proper divisors (19184115753).

42205054551 is a wasteful number, since it uses less digits than its factorization.

42205054551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1278941061.

The product of its (nonzero) digits is 40000, while the sum is 33.

The spelling of 42205054551 in words is "forty-two billion, two hundred five million, fifty-four thousand, five hundred fifty-one".