6581869434 has 96 divisors (see below), whose sum is σ = 17096443200. Its totient is φ = 1871462880.

The previous prime is 6581869429. The next prime is 6581869453. The reversal of 6581869434 is 4349681856.

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

It is a Curzon 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, 552412 + ... + 564200.

It is an arithmetic number, because the mean of its divisors is an integer number (178087950).

Almost surely, 2^6581869434 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6581869434, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8548221600).

6581869434 is an abundant number, since it is smaller than the sum of its proper divisors (10514573766).

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

6581869434 is a wasteful number, since it uses less digits than its factorization.

6581869434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12025 (or 12012 counting only the distinct ones).

The product of its digits is 4976640, while the sum is 54.

The square root of 6581869434 is about 81128.7213876812. The cubic root of 6581869434 is about 1874.0582585982.

The spelling of 6581869434 in words is "six billion, five hundred eighty-one million, eight hundred sixty-nine thousand, four hundred thirty-four".