42056347551 has 8 divisors (see below), whose sum is σ = 56503185024. Its totient is φ = 27823537560.

The previous prime is 42056347547. The next prime is 42056347577. The reversal of 42056347551 is 15574365024.

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

It is not a de Polignac number, because 42056347551 - 2² = 42056347547 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42056347451) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53506411 + ... + 53507196.

It is an arithmetic number, because the mean of its divisors is an integer number (7062898128).

Almost surely, 2^42056347551 is an apocalyptic number.

42056347551 is a deficient number, since it is larger than the sum of its proper divisors (14446837473).

42056347551 is a wasteful number, since it uses less digits than its factorization.

42056347551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107013741.

The product of its (nonzero) digits is 504000, while the sum is 42.

The spelling of 42056347551 in words is "forty-two billion, fifty-six million, three hundred forty-seven thousand, five hundred fifty-one".