47878215784 has 32 divisors (see below), whose sum is σ = 105369050880. Its totient is φ = 19964660544.

The previous prime is 47878215773. The next prime is 47878215787. The reversal of 47878215784 is 48751287874.

It is not an unprimeable number, because it can be changed into a prime (47878215787) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11551552 + ... + 11555695.

It is an arithmetic number, because the mean of its divisors is an integer number (3292782840).

Almost surely, 2^47878215784 is an apocalyptic number.

It is an amenable number.

47878215784 is an abundant number, since it is smaller than the sum of its proper divisors (57490835096).

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

47878215784 is a wasteful number, since it uses less digits than its factorization.

47878215784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23107297 (or 23107293 counting only the distinct ones).

The product of its digits is 28098560, while the sum is 61.

The spelling of 47878215784 in words is "forty-seven billion, eight hundred seventy-eight million, two hundred fifteen thousand, seven hundred eighty-four".