1003775556996 has 81 divisors (see below), whose sum is σ = 2608329176271. Its totient is φ = 325476693504.

The previous prime is 1003775556943. The next prime is 1003775557007. The reversal of 1003775556996 is 6996555773001.

The square root of 1003775556996 is 1001886.

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

1003775556996 is a `hidden beast` number, since 1 + 0 + 0 + 3 + 7 + 75 + 556 + 9 + 9 + 6 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 92972547396 + 910803009600 = 304914^2 + 954360^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 222416436 + ... + 222420948.

Almost surely, 2^{1003775556996} is an apocalyptic number.

1003775556996 is the 1001886-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1003775556996

1003775556996 is an abundant number, since it is smaller than the sum of its proper divisors (1604553619275).

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

1003775556996 is an frugal number, since it uses more digits than its factorization.

1003775556996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9110 (or 4555 counting only the distinct ones).

The product of its (nonzero) digits is 53581500, while the sum is 63.

The spelling of 1003775556996 in words is "one trillion, three billion, seven hundred seventy-five million, five hundred fifty-six thousand, nine hundred ninety-six".