47559121920 has 528 divisors, whose sum is σ = 178567506720. Its totient is φ = 12002328576.

The previous prime is 47559121873. The next prime is 47559121931. The reversal of 47559121920 is 2912195574.

47559121920 is a `hidden beast` number, since 4 + 7 + 559 + 1 + 2 + 1 + 92 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 49904164 + ... + 49905116.

Almost surely, 2^47559121920 is an apocalyptic number.

47559121920 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 47559121920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (89283753360).

47559121920 is an abundant number, since it is smaller than the sum of its proper divisors (131008384800).

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

47559121920 is a wasteful number, since it uses less digits than its factorization.

47559121920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1025 (or 982 counting only the distinct ones).

The product of its (nonzero) digits is 226800, while the sum is 45.

The spelling of 47559121920 in words is "forty-seven billion, five hundred fifty-nine million, one hundred twenty-one thousand, nine hundred twenty".