47857147905 has 32 divisors (see below), whose sum is σ = 87590928384. Its totient is φ = 21857374656.

The previous prime is 47857147859. The next prime is 47857147931. The reversal of 47857147905 is 50974175874.

It is not a de Polignac number, because 47857147905 - 2¹⁸ = 47856885761 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 95517 + ... + 323786.

It is an arithmetic number, because the mean of its divisors is an integer number (2737216512).

Almost surely, 2^47857147905 is an apocalyptic number.

It is an amenable number.

47857147905 is a deficient number, since it is larger than the sum of its proper divisors (39733780479).

47857147905 is a wasteful number, since it uses less digits than its factorization.

47857147905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 420405.

The product of its (nonzero) digits is 9878400, while the sum is 57.

The spelling of 47857147905 in words is "forty-seven billion, eight hundred fifty-seven million, one hundred forty-seven thousand, nine hundred five".