47063131920 has 840 divisors, whose sum is σ = 195790611456. Its totient is φ = 10479684096.

The previous prime is 47063131889. The next prime is 47063131979. The reversal of 47063131920 is 2913136074.

47063131920 is a `hidden beast` number, since 4 + 7 + 0 + 631 + 3 + 19 + 2 + 0 = 666.

47063131920 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (840).

It is a super-2 number, since 2×47063131920² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 167 ways as a sum of consecutive naturals, for example, 122880049 + ... + 122880431.

Almost surely, 2^47063131920 is an apocalyptic number.

47063131920 is a gapful number since it is divisible by the number (40) 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 47063131920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (97895305728).

47063131920 is an abundant number, since it is smaller than the sum of its proper divisors (148727479536).

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

47063131920 is a wasteful number, since it uses less digits than its factorization.

47063131920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 471 (or 443 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 36.

Adding to 47063131920 its reverse (2913136074), we get a palindrome (49976267994).

The spelling of 47063131920 in words is "forty-seven billion, sixty-three million, one hundred thirty-one thousand, nine hundred twenty".