83912509548 has 240 divisors, whose sum is σ = 261353030400. Its totient is φ = 22969215360.

The previous prime is 83912509543. The next prime is 83912509561. The reversal of 83912509548 is 84590521938.

83912509548 is a `hidden beast` number, since 8 + 3 + 91 + 2 + 5 + 0 + 9 + 548 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a junction number, because it is equal to n+sod(n) for n = 83912509494 and 83912509503.

It is not an unprimeable number, because it can be changed into a prime (83912509543) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 8611263 + ... + 8621001.

It is an arithmetic number, because the mean of its divisors is an integer number (1088970960).

Almost surely, 2^83912509548 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 83912509548, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (130676515200).

83912509548 is an abundant number, since it is smaller than the sum of its proper divisors (177440520852).

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

83912509548 is a wasteful number, since it uses less digits than its factorization.

83912509548 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9922 (or 9911 counting only the distinct ones).

The product of its (nonzero) digits is 3110400, while the sum is 54.

The spelling of 83912509548 in words is "eighty-three billion, nine hundred twelve million, five hundred nine thousand, five hundred forty-eight".