47794731578 has 16 divisors (see below), whose sum is σ = 78216455520. Its totient is φ = 21722962800.

The previous prime is 47794731547. The next prime is 47794731613. The reversal of 47794731578 is 87513749774.

It is a super-2 number, since 2×47794731578² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 47794731578.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 176693 + ... + 356103.

It is an arithmetic number, because the mean of its divisors is an integer number (4888528470).

Almost surely, 2^47794731578 is an apocalyptic number.

47794731578 is a deficient number, since it is larger than the sum of its proper divisors (30421723942).

47794731578 is a wasteful number, since it uses less digits than its factorization.

47794731578 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191533.

The product of its digits is 41489280, while the sum is 62.

The spelling of 47794731578 in words is "forty-seven billion, seven hundred ninety-four million, seven hundred thirty-one thousand, five hundred seventy-eight".