47878217972 has 96 divisors (see below), whose sum is σ = 92703647232. Its totient is φ = 21503655936.

The previous prime is 47878217951. The next prime is 47878217987. The reversal of 47878217972 is 27971287874.

It is a congruent number.

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 31 ways as a sum of consecutive naturals, for example, 95185073 + ... + 95185575.

It is an arithmetic number, because the mean of its divisors is an integer number (965662992).

Almost surely, 2^47878217972 is an apocalyptic number.

It is an amenable number.

47878217972 is a deficient number, since it is larger than the sum of its proper divisors (44825429260).

47878217972 is a wasteful number, since it uses less digits than its factorization.

47878217972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 897 (or 895 counting only the distinct ones).

The product of its digits is 22127616, while the sum is 62.

The spelling of 47878217972 in words is "forty-seven billion, eight hundred seventy-eight million, two hundred seventeen thousand, nine hundred seventy-two".