47509395561 has 8 divisors (see below), whose sum is σ = 70384289760. Its totient is φ = 31672930356.

The previous prime is 47509395553. The next prime is 47509395643. The reversal of 47509395561 is 16559390574.

47509395561 is a `hidden beast` number, since 4 + 7 + 50 + 9 + 39 + 556 + 1 = 666.

It is not a de Polignac number, because 47509395561 - 2³ = 47509395553 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 47509395498 and 47509395507.

It is not an unprimeable number, because it can be changed into a prime (47509395161) 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, 879803595 + ... + 879803648.

It is an arithmetic number, because the mean of its divisors is an integer number (8798036220).

Almost surely, 2^47509395561 is an apocalyptic number.

It is an amenable number.

47509395561 is a deficient number, since it is larger than the sum of its proper divisors (22874894199).

47509395561 is a wasteful number, since it uses less digits than its factorization.

47509395561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1759607252 (or 1759607246 counting only the distinct ones).

The product of its (nonzero) digits is 5103000, while the sum is 54.

The spelling of 47509395561 in words is "forty-seven billion, five hundred nine million, three hundred ninety-five thousand, five hundred sixty-one".