2108581555 has 16 divisors (see below), whose sum is σ = 2543134464. Its totient is φ = 1678330080.

The previous prime is 2108581507. The next prime is 2108581597. The reversal of 2108581555 is 5551858012.

It is not a de Polignac number, because 2108581555 - 2⁷ = 2108581427 is a prime.

It is a super-2 number, since 2×2108581555² = 8892232348172436050, which contains 22 as substring.

It is a Duffinian 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, 1222924 + ... + 1224646.

It is an arithmetic number, because the mean of its divisors is an integer number (158945904).

Almost surely, 2^2108581555 is an apocalyptic number.

2108581555 is a deficient number, since it is larger than the sum of its proper divisors (434552909).

2108581555 is a wasteful number, since it uses less digits than its factorization.

2108581555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2826.

The product of its (nonzero) digits is 80000, while the sum is 40.

The square root of 2108581555 is about 45919.2939296762. The cubic root of 2108581555 is about 1282.3211372498.

The spelling of 2108581555 in words is "two billion, one hundred eight million, five hundred eighty-one thousand, five hundred fifty-five".