2566351601 has 8 divisors (see below), whose sum is σ = 2828519904. Its totient is φ = 2308993920.

The previous prime is 2566351591. The next prime is 2566351621. The reversal of 2566351601 is 1061536652.

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

It is a cyclic number.

It is not a de Polignac number, because 2566351601 - 2³⁰ = 1492609777 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2566351621) 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, 1201535 + ... + 1203668.

It is an arithmetic number, because the mean of its divisors is an integer number (353564988).

Almost surely, 2^2566351601 is an apocalyptic number.

It is an amenable number.

2566351601 is a deficient number, since it is larger than the sum of its proper divisors (262168303).

2566351601 is a wasteful number, since it uses less digits than its factorization.

2566351601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2405311.

The product of its (nonzero) digits is 32400, while the sum is 35.

The square root of 2566351601 is about 50659.1709466312. The cubic root of 2566351601 is about 1369.1111859701. Note that the first 4 decimals are identical.

The spelling of 2566351601 in words is "two billion, five hundred sixty-six million, three hundred fifty-one thousand, six hundred one".