2099509732605 has 16 divisors (see below), whose sum is σ = 3437336865600. Its totient is φ = 1093698092928.

The previous prime is 2099509732591. The next prime is 2099509732633. The reversal of 2099509732605 is 5062379059902.

It is not a de Polignac number, because 2099509732605 - 2⁹ = 2099509732093 is a prime.

It is a super-2 number, since 2×2099509732605² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1627526280 + ... + 1627527569.

It is an arithmetic number, because the mean of its divisors is an integer number (214833554100).

Almost surely, 2^{2099509732605} is an apocalyptic number.

It is an amenable number.

2099509732605 is a deficient number, since it is larger than the sum of its proper divisors (1337827132995).

2099509732605 is a wasteful number, since it uses less digits than its factorization.

2099509732605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3255053900.

The product of its (nonzero) digits is 9185400, while the sum is 57.

The spelling of 2099509732605 in words is "two trillion, ninety-nine billion, five hundred nine million, seven hundred thirty-two thousand, six hundred five".