47081387136 has 512 divisors, whose sum is σ = 158630400000. Its totient is φ = 12062932992.

The previous prime is 47081387107. The next prime is 47081387147. The reversal of 47081387136 is 63178318074.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 175023610 + ... + 175023878.

It is an arithmetic number, because the mean of its divisors is an integer number (309825000).

Almost surely, 2^47081387136 is an apocalyptic number.

47081387136 is a gapful number since it is divisible by the number (46) 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 47081387136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79315200000).

47081387136 is an abundant number, since it is smaller than the sum of its proper divisors (111549012864).

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

47081387136 is a wasteful number, since it uses less digits than its factorization.

47081387136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 484 (or 472 counting only the distinct ones).

The product of its (nonzero) digits is 677376, while the sum is 48.

The spelling of 47081387136 in words is "forty-seven billion, eighty-one million, three hundred eighty-seven thousand, one hundred thirty-six".