47778457672 has 32 divisors (see below), whose sum is σ = 97756333920. Its totient is φ = 21711331840.

The previous prime is 47778457651. The next prime is 47778457691. The reversal of 47778457672 is 27675487774.

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, 243243 + ... + 393349.

It is an arithmetic number, because the mean of its divisors is an integer number (3054885435).

Almost surely, 2^47778457672 is an apocalyptic number.

It is an amenable number.

47778457672 is an abundant number, since it is smaller than the sum of its proper divisors (49977876248).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

47778457672 is a wasteful number, since it uses less digits than its factorization.

47778457672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153741 (or 153737 counting only the distinct ones).

The product of its digits is 129077760, while the sum is 64.

The spelling of 47778457672 in words is "forty-seven billion, seven hundred seventy-eight million, four hundred fifty-seven thousand, six hundred seventy-two".