47978649672 has 64 divisors (see below), whose sum is σ = 127034400000. Its totient is φ = 15058177344.

The previous prime is 47978649643. The next prime is 47978649679. The reversal of 47978649672 is 27694687974.

It is a super-3 number, since 3×47978649672³ (a number of 33 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 47978649597 and 47978649606.

It is not an unprimeable number, because it can be changed into a prime (47978649679) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 248422 + ... + 397077.

It is an arithmetic number, because the mean of its divisors is an integer number (1984912500).

Almost surely, 2^47978649672 is an apocalyptic number.

It is an amenable number.

47978649672 is an abundant number, since it is smaller than the sum of its proper divisors (79055750328).

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

47978649672 is a wasteful number, since it uses less digits than its factorization.

47978649672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 645690 (or 645686 counting only the distinct ones).

The product of its digits is 256048128, while the sum is 69.

The spelling of 47978649672 in words is "forty-seven billion, nine hundred seventy-eight million, six hundred forty-nine thousand, six hundred seventy-two".