47840578697 has 4 divisors (see below), whose sum is σ = 47841068436. Its totient is φ = 47840088960.

The previous prime is 47840578693. The next prime is 47840578717. The reversal of 47840578697 is 79687504874.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 30575669881 + 17264908816 = 174859^2 + 131396^2 .

It is a cyclic number.

It is not a de Polignac number, because 47840578697 - 2² = 47840578693 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47840578693) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42704 + ... + 312257.

It is an arithmetic number, because the mean of its divisors is an integer number (11960267109).

Almost surely, 2^47840578697 is an apocalyptic number.

It is an amenable number.

47840578697 is a deficient number, since it is larger than the sum of its proper divisors (489739).

47840578697 is a wasteful number, since it uses less digits than its factorization.

47840578697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 489738.

The product of its (nonzero) digits is 94832640, while the sum is 65.

The spelling of 47840578697 in words is "forty-seven billion, eight hundred forty million, five hundred seventy-eight thousand, six hundred ninety-seven".