10516554999 has 8 divisors (see below), whose sum is σ = 15580081520. Its totient is φ = 7011036648.

The previous prime is 10516554989. The next prime is 10516555013. The reversal of 10516554999 is 99945561501.

10516554999 is a `hidden beast` number, since 1 + 0 + 5 + 1 + 6 + 5 + 549 + 99 = 666.

It is not a de Polignac number, because 10516554999 - 2⁷ = 10516554871 is a prime.

It is a super-2 number, since 2×10516554999² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10516554959) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 194750992 + ... + 194751045.

It is an arithmetic number, because the mean of its divisors is an integer number (1947510190).

Almost surely, 2^10516554999 is an apocalyptic number.

10516554999 is a deficient number, since it is larger than the sum of its proper divisors (5063526521).

10516554999 is an equidigital number, since it uses as much as digits as its factorization.

10516554999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 389502046 (or 389502040 counting only the distinct ones).

The product of its (nonzero) digits is 2187000, while the sum is 54.

The spelling of 10516554999 in words is "ten billion, five hundred sixteen million, five hundred fifty-four thousand, nine hundred ninety-nine".