2641517651 has 4 divisors (see below), whose sum is σ = 2654036904. Its totient is φ = 2628998400.

The previous prime is 2641517603. The next prime is 2641517689. The reversal of 2641517651 is 1567151462.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1567151462 = 2 ⋅783575731.

It is a cyclic number.

It is not a de Polignac number, because 2641517651 - 2¹⁴ = 2641501267 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2641517051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6259310 + ... + 6259731.

It is an arithmetic number, because the mean of its divisors is an integer number (663509226).

Almost surely, 2^2641517651 is an apocalyptic number.

2641517651 is a deficient number, since it is larger than the sum of its proper divisors (12519253).

2641517651 is a wasteful number, since it uses less digits than its factorization.

2641517651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12519252.

The product of its digits is 50400, while the sum is 38.

The square root of 2641517651 is about 51395.6968140330. The cubic root of 2641517651 is about 1382.3494339240.

The spelling of 2641517651 in words is "two billion, six hundred forty-one million, five hundred seventeen thousand, six hundred fifty-one".