1999305505024 has 81 divisors (see below), whose sum is σ = 4054328225787. Its totient is φ = 983985987072.

The previous prime is 1999305505019. The next prime is 1999305505027. The reversal of 1999305505024 is 4205055039991.

The square root of 1999305505024 is 1413968.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1999305505027) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1515773037 + ... + 1515774355.

Almost surely, 2^{1999305505024} is an apocalyptic number.

1999305505024 is the 1413968-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1999305505024

1999305505024 is an abundant number, since it is smaller than the sum of its proper divisors (2055022720763).

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

1999305505024 is an frugal number, since it uses more digits than its factorization.

1999305505024 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2788 (or 1388 counting only the distinct ones).

The product of its (nonzero) digits is 2187000, while the sum is 52.

The spelling of 1999305505024 in words is "one trillion, nine hundred ninety-nine billion, three hundred five million, five hundred five thousand, twenty-four".