990579113011 has 4 divisors (see below), whose sum is σ = 1014739579224. Its totient is φ = 966418646800.

The previous prime is 990579113009. The next prime is 990579113059. The reversal of 990579113011 is 110311975099.

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

It is a cyclic number.

It is not a de Polignac number, because 990579113011 - 2¹ = 990579113009 is a prime.

It is a super-2 number, since 2×990579113011² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (990579113611) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12080233045 + ... + 12080233126.

It is an arithmetic number, because the mean of its divisors is an integer number (253684894806).

Almost surely, 2^990579113011 is an apocalyptic number.

990579113011 is a deficient number, since it is larger than the sum of its proper divisors (24160466213).

990579113011 is a wasteful number, since it uses less digits than its factorization.

990579113011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24160466212.

The product of its (nonzero) digits is 76545, while the sum is 46.

The spelling of 990579113011 in words is "nine hundred ninety billion, five hundred seventy-nine million, one hundred thirteen thousand, eleven".