47145939860 has 72 divisors (see below), whose sum is σ = 106897913304. Its totient is φ = 17457960960.

The previous prime is 47145939859. The next prime is 47145939913. The reversal of 47145939860 is 6893954174.

It can be written as a sum of positive squares in 12 ways, for example, as 22938314116 + 24207625744 = 151454^2 + 155588^2 .

It is a junction number, because it is equal to n+sod(n) for n = 47145939796 and 47145939805.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 285722 + ... + 419438.

Almost surely, 2^47145939860 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 47145939860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (53448956652).

47145939860 is an abundant number, since it is smaller than the sum of its proper divisors (59751973444).

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

47145939860 is a wasteful number, since it uses less digits than its factorization.

47145939860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133821 (or 133802 counting only the distinct ones).

The product of its (nonzero) digits is 6531840, while the sum is 56.

The spelling of 47145939860 in words is "forty-seven billion, one hundred forty-five million, nine hundred thirty-nine thousand, eight hundred sixty".