101005605099 has 20 divisors (see below), whose sum is σ = 172439905264. Its totient is φ = 57717488304.

The previous prime is 101005605091. The next prime is 101005605143. The reversal of 101005605099 is 990506500101.

101005605099 is a `hidden beast` number, since 1 + 0 + 1 + 0 + 0 + 560 + 5 + 0 + 99 = 666.

It is not a de Polignac number, because 101005605099 - 2³ = 101005605091 is a prime.

It is a super-2 number, since 2×101005605099² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (101005605091) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 89069632 + ... + 89070765.

Almost surely, 2^101005605099 is an apocalyptic number.

101005605099 is a deficient number, since it is larger than the sum of its proper divisors (71434300165).

101005605099 is an equidigital number, since it uses as much as digits as its factorization.

101005605099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178140416 (or 178140407 counting only the distinct ones).

The product of its (nonzero) digits is 12150, while the sum is 36.

The spelling of 101005605099 in words is "one hundred one billion, five million, six hundred five thousand, ninety-nine".