869463049728 has 1280 divisors, whose sum is σ = 3093002035200. Its totient is φ = 215373053952.

The previous prime is 869463049723. The next prime is 869463049729. The reversal of 869463049728 is 827940364968.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (869463049723) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 11910452700 + ... + 11910452772.

It is an arithmetic number, because the mean of its divisors is an integer number (2416407840).

Almost surely, 2^869463049728 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 869463049728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1546501017600).

869463049728 is an abundant number, since it is smaller than the sum of its proper divisors (2223538985472).

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

869463049728 is a wasteful number, since it uses less digits than its factorization.

869463049728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212 (or 182 counting only the distinct ones).

The product of its (nonzero) digits is 125411328, while the sum is 66.

The spelling of 869463049728 in words is "eight hundred sixty-nine billion, four hundred sixty-three million, forty-nine thousand, seven hundred twenty-eight".