47978029867 has 12 divisors (see below), whose sum is σ = 52612420536. Its totient is φ = 43598683520.

The previous prime is 47978029859. The next prime is 47978029871. The reversal of 47978029867 is 76892087974.

It is not a de Polignac number, because 47978029867 - 2³ = 47978029859 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47978021867) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1663609 + ... + 1692202.

It is an arithmetic number, because the mean of its divisors is an integer number (4384368378).

Almost surely, 2^47978029867 is an apocalyptic number.

47978029867 is a deficient number, since it is larger than the sum of its proper divisors (4634390669).

47978029867 is a wasteful number, since it uses less digits than its factorization.

47978029867 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3355886 (or 3355857 counting only the distinct ones).

The product of its (nonzero) digits is 85349376, while the sum is 67.

The spelling of 47978029867 in words is "forty-seven billion, nine hundred seventy-eight million, twenty-nine thousand, eight hundred sixty-seven".