47219977728 has 1120 divisors, whose sum is σ = 185485842432. Its totient is φ = 11645337600.

The previous prime is 47219977711. The next prime is 47219977741. The reversal of 47219977728 is 82777991274.

47219977728 is a `hidden beast` number, since 472 + 1 + 9 + 97 + 7 + 72 + 8 = 666.

47219977728 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 111 ways as a sum of consecutive naturals, for example, 890942950 + ... + 890943002.

Almost surely, 2^47219977728 is an apocalyptic number.

47219977728 is a gapful number since it is divisible by the number (48) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 47219977728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (92742921216).

47219977728 is an abundant number, since it is smaller than the sum of its proper divisors (138265864704).

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

47219977728 is an equidigital number, since it uses as much as digits as its factorization.

47219977728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138 (or 107 counting only the distinct ones).

The product of its digits is 24893568, while the sum is 63.

The spelling of 47219977728 in words is "forty-seven billion, two hundred nineteen million, nine hundred seventy-seven thousand, seven hundred twenty-eight".