47781493888 has 32 divisors (see below), whose sum is σ = 99328383360. Its totient is φ = 22852017408.

The previous prime is 47781493871. The next prime is 47781493901. The reversal of 47781493888 is 88839418774.

It is a tau number, because it is divible by the number of its divisors (32).

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, 8112120 + ... + 8118007.

It is an arithmetic number, because the mean of its divisors is an integer number (3104011980).

Almost surely, 2^47781493888 is an apocalyptic number.

It is an amenable number.

47781493888 is an abundant number, since it is smaller than the sum of its proper divisors (51546889472).

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

47781493888 is a wasteful number, since it uses less digits than its factorization.

47781493888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16230164 (or 16230152 counting only the distinct ones).

The product of its digits is 86704128, while the sum is 67.

The spelling of 47781493888 in words is "forty-seven billion, seven hundred eighty-one million, four hundred ninety-three thousand, eight hundred eighty-eight".