47212518520 has 64 divisors (see below), whose sum is σ = 109988215200. Its totient is φ = 18217704960.

The previous prime is 47212518511. The next prime is 47212518523. The reversal of 47212518520 is 2581521274.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 47212518520.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47212518523) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1340982 + ... + 1375738.

Almost surely, 2^47212518520 is an apocalyptic number.

47212518520 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 47212518520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (54994107600).

47212518520 is an abundant number, since it is smaller than the sum of its proper divisors (62775696680).

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

47212518520 is a wasteful number, since it uses less digits than its factorization.

47212518520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35968 (or 35964 counting only the distinct ones).

The product of its (nonzero) digits is 44800, while the sum is 37.

The spelling of 47212518520 in words is "forty-seven billion, two hundred twelve million, five hundred eighteen thousand, five hundred twenty".