47278725478 has 8 divisors (see below), whose sum is σ = 70922978568. Its totient is φ = 23637732624.

The previous prime is 47278725469. The next prime is 47278725497. The reversal of 47278725478 is 87452787274.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 778476 + ... + 837007.

It is an arithmetic number, because the mean of its divisors is an integer number (8865372321).

Almost surely, 2^47278725478 is an apocalyptic number.

47278725478 is a deficient number, since it is larger than the sum of its proper divisors (23644253090).

47278725478 is a wasteful number, since it uses less digits than its factorization.

47278725478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1630118.

The product of its digits is 49172480, while the sum is 61.

The spelling of 47278725478 in words is "forty-seven billion, two hundred seventy-eight million, seven hundred twenty-five thousand, four hundred seventy-eight".