999566145760 has 576 divisors, whose sum is σ = 3012058732032. Its totient is φ = 305219432448.

The previous prime is 999566145703. The next prime is 999566145797. The reversal of 999566145760 is 67541665999.

999566145760 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 2880593907 + ... + 2880594253.

It is an arithmetic number, because the mean of its divisors is an integer number (5229268632).

Almost surely, 2^999566145760 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 999566145760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1506029366016).

999566145760 is an abundant number, since it is smaller than the sum of its proper divisors (2012492586272).

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

999566145760 is a wasteful number, since it uses less digits than its factorization.

999566145760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 575 (or 524 counting only the distinct ones).

The product of its (nonzero) digits is 110224800, while the sum is 67.

The spelling of 999566145760 in words is "nine hundred ninety-nine billion, five hundred sixty-six million, one hundred forty-five thousand, seven hundred sixty".