47645004878 has 4 divisors (see below), whose sum is σ = 71467507320. Its totient is φ = 23822502438.

The previous prime is 47645004863. The next prime is 47645004907. The reversal of 47645004878 is 87840054674.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11911251218 + ... + 11911251221.

It is an arithmetic number, because the mean of its divisors is an integer number (17866876830).

Almost surely, 2^47645004878 is an apocalyptic number.

47645004878 is a deficient number, since it is larger than the sum of its proper divisors (23822502442).

47645004878 is a wasteful number, since it uses less digits than its factorization.

47645004878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23822502441.

The product of its (nonzero) digits is 6021120, while the sum is 53.

The spelling of 47645004878 in words is "forty-seven billion, six hundred forty-five million, four thousand, eight hundred seventy-eight".