990000000067 has 16 divisors (see below), whose sum is σ = 1071923684832. Its totient is φ = 908903681280.

The previous prime is 990000000061. The next prime is 990000000089. The reversal of 990000000067 is 760000000099.

It is a cyclic number.

It is not a de Polignac number, because 990000000067 - 2¹⁹ = 989999475779 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 989999999966 and 990000000038.

It is not an unprimeable number, because it can be changed into a prime (990000000061) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7791567 + ... + 7917607.

It is an arithmetic number, because the mean of its divisors is an integer number (66995230302).

Almost surely, 2^990000000067 is an apocalyptic number.

990000000067 is a deficient number, since it is larger than the sum of its proper divisors (81923684765).

990000000067 is a wasteful number, since it uses less digits than its factorization.

990000000067 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129318.

The product of its (nonzero) digits is 3402, while the sum is 31.

The spelling of 990000000067 in words is "nine hundred ninety billion, sixty-seven", and thus it is an aban number.