2659109987 has 8 divisors (see below), whose sum is σ = 2715524112. Its totient is φ = 2603109600.

The previous prime is 2659109953. The next prime is 2659109989. The reversal of 2659109987 is 7899019562.

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-2659109987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2659109989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 90428 + ... + 116169.

It is an arithmetic number, because the mean of its divisors is an integer number (339440514).

Almost surely, 2^2659109987 is an apocalyptic number.

2659109987 is a deficient number, since it is larger than the sum of its proper divisors (56414125).

2659109987 is a wasteful number, since it uses less digits than its factorization.

2659109987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206869.

The product of its (nonzero) digits is 2449440, while the sum is 56.

The square root of 2659109987 is about 51566.5588051016. The cubic root of 2659109987 is about 1385.4114321985.

The spelling of 2659109987 in words is "two billion, six hundred fifty-nine million, one hundred nine thousand, nine hundred eighty-seven".