990962511841 has 3 divisors (see below), whose sum is σ = 990963507313. Its totient is φ = 990961516370.

The previous prime is 990962511839. The next prime is 990962511859. The reversal of 990962511841 is 148115269099.

It is a happy number.

The square root of 990962511841 is 995471.

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

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 990962511841 - 2¹ = 990962511839 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (990962511821) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 497736 + ... + 1493206.

Almost surely, 2^990962511841 is an apocalyptic number.

990962511841 is the 995471-st square number.

990962511841 is the 497736-th centered octagonal number.

It is an amenable number.

990962511841 is a deficient number, since it is larger than the sum of its proper divisors (995472).

990962511841 is an frugal number, since it uses more digits than its factorization.

990962511841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1990942 (or 995471 counting only the distinct ones).

The product of its (nonzero) digits is 1399680, while the sum is 55.

The spelling of 990962511841 in words is "nine hundred ninety billion, nine hundred sixty-two million, five hundred eleven thousand, eight hundred forty-one".