2563645015 has 8 divisors (see below), whose sum is σ = 3238288560. Its totient is φ = 1942972992.

The previous prime is 2563645013. The next prime is 2563645057. The reversal of 2563645015 is 5105463652.

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 2563645015 - 2¹ = 2563645013 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2563645013) 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 7 ways as a sum of consecutive naturals, for example, 13492774 + ... + 13492963.

It is an arithmetic number, because the mean of its divisors is an integer number (404786070).

Almost surely, 2^2563645015 is an apocalyptic number.

2563645015 is a deficient number, since it is larger than the sum of its proper divisors (674643545).

2563645015 is a wasteful number, since it uses less digits than its factorization.

2563645015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26985761.

The product of its (nonzero) digits is 108000, while the sum is 37.

The square root of 2563645015 is about 50632.4502172273. The cubic root of 2563645015 is about 1368.6297086032.

The spelling of 2563645015 in words is "two billion, five hundred sixty-three million, six hundred forty-five thousand, fifteen".