2691917601851 has 8 divisors (see below), whose sum is σ = 2728860026160. Its totient is φ = 2654976984192.

The previous prime is 2691917601833. The next prime is 2691917601917. The reversal of 2691917601851 is 1581067191962.

2691917601851 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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-2691917601851 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2691917601251) 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, 2698511 + ... + 3558903.

It is an arithmetic number, because the mean of its divisors is an integer number (341107503270).

Almost surely, 2^{2691917601851} is an apocalyptic number.

2691917601851 is a deficient number, since it is larger than the sum of its proper divisors (36942424309).

2691917601851 is an equidigital number, since it uses as much as digits as its factorization.

2691917601851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 903325.

The product of its (nonzero) digits is 1632960, while the sum is 56.

The spelling of 2691917601851 in words is "two trillion, six hundred ninety-one billion, nine hundred seventeen million, six hundred one thousand, eight hundred fifty-one".