47947138851528 has 256 divisors, whose sum is σ = 158937657753600. Its totient is φ = 13094775048960.

The previous prime is 47947138851527. The next prime is 47947138851539. The reversal of 47947138851528 is 82515883174974.

47947138851528 is a `hidden beast` number, since 4 + 7 + 9 + 4 + 7 + 1 + 3 + 88 + 515 + 28 = 666.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is not an unprimeable number, because it can be changed into a prime (47947138851523) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 51458833 + ... + 52382303.

It is an arithmetic number, because the mean of its divisors is an integer number (620850225600).

Almost surely, 2^{47947138851528} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 47947138851528, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79468828876800).

47947138851528 is an abundant number, since it is smaller than the sum of its proper divisors (110990518902072).

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

47947138851528 is a wasteful number, since it uses less digits than its factorization.

47947138851528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 925009 (or 924999 counting only the distinct ones).

The product of its digits is 541900800, while the sum is 72.

The spelling of 47947138851528 in words is "forty-seven trillion, nine hundred forty-seven billion, one hundred thirty-eight million, eight hundred fifty-one thousand, five hundred twenty-eight".