42578056051 has 2 divisors, whose sum is σ = 42578056052. Its totient is φ = 42578056050.

The previous prime is 42578056039. The next prime is 42578056117. The reversal of 42578056051 is 15065087524.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42578056051 - 2⁵ = 42578056019 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 42578055989 and 42578056007.

It is not a weakly prime, because it can be changed into another prime (42578086051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21289028025 + 21289028026.

It is an arithmetic number, because the mean of its divisors is an integer number (21289028026).

Almost surely, 2^42578056051 is an apocalyptic number.

42578056051 is a deficient number, since it is larger than the sum of its proper divisors (1).

42578056051 is an equidigital number, since it uses as much as digits as its factorization.

42578056051 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 336000, while the sum is 43.

The spelling of 42578056051 in words is "forty-two billion, five hundred seventy-eight million, fifty-six thousand, fifty-one".