2661170399 has 8 divisors (see below), whose sum is σ = 2692132560. Its totient is φ = 2630232000.

The previous prime is 2661170371. The next prime is 2661170483. The reversal of 2661170399 is 9930711662.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2661170399 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2661170329) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 324449 + ... + 332549.

It is an arithmetic number, because the mean of its divisors is an integer number (336516570).

Almost surely, 2^2661170399 is an apocalyptic number.

2661170399 is a deficient number, since it is larger than the sum of its proper divisors (30962161).

2661170399 is an equidigital number, since it uses as much as digits as its factorization.

2661170399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11881.

The product of its (nonzero) digits is 122472, while the sum is 44.

The square root of 2661170399 is about 51586.5331166963. The cubic root of 2661170399 is about 1385.7691686085.

The spelling of 2661170399 in words is "two billion, six hundred sixty-one million, one hundred seventy thousand, three hundred ninety-nine".