9980511123 has 12 divisors (see below), whose sum is σ = 14627085704. Its totient is φ = 6048794400.

The previous prime is 9980511119. The next prime is 9980511139. The reversal of 9980511123 is 3211150899.

9980511123 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 9980511123 - 2² = 9980511119 is a prime.

It is a super-2 number, since 2×9980511123² (a number of 21 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (9980511103) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13746898 + ... + 13747623.

Almost surely, 2^9980511123 is an apocalyptic number.

9980511123 is a deficient number, since it is larger than the sum of its proper divisors (4646574581).

9980511123 is a wasteful number, since it uses less digits than its factorization.

9980511123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27494546 (or 27494535 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 39.

The square root of 9980511123 is about 99902.5080916390. The cubic root of 9980511123 is about 2153.0341960797.

The spelling of 9980511123 in words is "nine billion, nine hundred eighty million, five hundred eleven thousand, one hundred twenty-three".