990204801602 has 16 divisors (see below), whose sum is σ = 1487446270200. Its totient is φ = 494389658880.

The previous prime is 990204801559. The next prime is 990204801613. The reversal of 990204801602 is 206108402099.

It can be written as a sum of positive squares in 4 ways, for example, as 963776121841 + 26428679761 = 981721^2 + 162569^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 990204801602.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7262474 + ... + 7397562.

Almost surely, 2^990204801602 is an apocalyptic number.

990204801602 is a deficient number, since it is larger than the sum of its proper divisors (497241468598).

990204801602 is a wasteful number, since it uses less digits than its factorization.

990204801602 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140341.

The product of its (nonzero) digits is 62208, while the sum is 41.

The spelling of 990204801602 in words is "nine hundred ninety billion, two hundred four million, eight hundred one thousand, six hundred two".