10999999999905 has 32 divisors (see below), whose sum is σ = 20114689444608. Its totient is φ = 5028470496000.

The previous prime is 10999999999889. The next prime is 10999999999927. The reversal of 10999999999905 is 50999999999901.

It is a happy number.

It is not a de Polignac number, because 10999999999905 - 2⁴ = 10999999999889 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4335555 + ... + 6387255.

It is an arithmetic number, because the mean of its divisors is an integer number (628584045144).

Almost surely, 2^{10999999999905} is an apocalyptic number.

10999999999905 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

10999999999905 is a deficient number, since it is larger than the sum of its proper divisors (9114689444703).

10999999999905 is a wasteful number, since it uses less digits than its factorization.

10999999999905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2102777.

The product of its (nonzero) digits is 17433922005, while the sum is 96.

The spelling of 10999999999905 in words is "ten trillion, nine hundred ninety-nine billion, nine hundred ninety-nine million, nine hundred ninety-nine thousand, nine hundred five".