42279205851 has 8 divisors (see below), whose sum is σ = 62635860560. Its totient is φ = 28186137216.

The previous prime is 42279205847. The next prime is 42279205919. The reversal of 42279205851 is 15850297224.

42279205851 is a `hidden beast` number, since 42 + 2 + 7 + 9 + 20 + 585 + 1 = 666.

It is not a de Polignac number, because 42279205851 - 2² = 42279205847 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42279205797 and 42279205806.

It is not an unprimeable number, because it can be changed into a prime (42279205811) 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, 782948230 + ... + 782948283.

It is an arithmetic number, because the mean of its divisors is an integer number (7829482570).

Almost surely, 2^42279205851 is an apocalyptic number.

42279205851 is a deficient number, since it is larger than the sum of its proper divisors (20356654709).

42279205851 is a wasteful number, since it uses less digits than its factorization.

42279205851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1565896522 (or 1565896516 counting only the distinct ones).

The product of its (nonzero) digits is 403200, while the sum is 45.

The spelling of 42279205851 in words is "forty-two billion, two hundred seventy-nine million, two hundred five thousand, eight hundred fifty-one".