1001005599994 has 4 divisors (see below), whose sum is σ = 1501508399994. Its totient is φ = 500502799996.

The previous prime is 1001005599973. The next prime is 1001005600027. The reversal of 1001005599994 is 4999955001001.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 991591749369 + 9413850625 = 995787^2 + 97025^2 .

It is a super-2 number, since 2×1001005599994² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 250251399997 + ... + 250251400000.

Almost surely, 2^{1001005599994} is an apocalyptic number.

1001005599994 is a deficient number, since it is larger than the sum of its proper divisors (500502800000).

1001005599994 is an equidigital number, since it uses as much as digits as its factorization.

1001005599994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 500502799999.

The product of its (nonzero) digits is 656100, while the sum is 52.

The spelling of 1001005599994 in words is "one trillion, one billion, five million, five hundred ninety-nine thousand, nine hundred ninety-four".