2117887355 has 4 divisors (see below), whose sum is σ = 2541464832. Its totient is φ = 1694309880.

The previous prime is 2117887337. The next prime is 2117887397. The reversal of 2117887355 is 5537887112.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 2117887355 - 2⁸ = 2117887099 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 211788731 + ... + 211788740.

It is an arithmetic number, because the mean of its divisors is an integer number (635366208).

Almost surely, 2^2117887355 is an apocalyptic number.

2117887355 is a deficient number, since it is larger than the sum of its proper divisors (423577477).

2117887355 is an equidigital number, since it uses as much as digits as its factorization.

2117887355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 423577476.

The product of its digits is 470400, while the sum is 47.

The square root of 2117887355 is about 46020.5101557990. The cubic root of 2117887355 is about 1284.2047909410.

The spelling of 2117887355 in words is "two billion, one hundred seventeen million, eight hundred eighty-seven thousand, three hundred fifty-five".