2617921099 has 12 divisors (see below), whose sum is σ = 2776133640. Its totient is φ = 2468309760.

The previous prime is 2617921073. The next prime is 2617921123. The reversal of 2617921099 is 9901297162.

It is a happy number.

It is not a de Polignac number, because 2617921099 - 2⁵ = 2617921067 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2617921499) 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, 58987 + ... + 93355.

It is an arithmetic number, because the mean of its divisors is an integer number (231344470).

Almost surely, 2^2617921099 is an apocalyptic number.

2617921099 is a deficient number, since it is larger than the sum of its proper divisors (158212541).

2617921099 is a wasteful number, since it uses less digits than its factorization.

2617921099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34618 (or 34599 counting only the distinct ones).

The product of its (nonzero) digits is 122472, while the sum is 46.

The square root of 2617921099 is about 51165.6241924204. The cubic root of 2617921099 is about 1378.2209622686.

It can be divided in two parts, 26179 and 21099, that added together give a triangular number (47278 = T₃₀₇).

The spelling of 2617921099 in words is "two billion, six hundred seventeen million, nine hundred twenty-one thousand, ninety-nine".