2564464256203 has 4 divisors (see below), whose sum is σ = 2564662037680. Its totient is φ = 2564266474728.

The previous prime is 2564464256143. The next prime is 2564464256239. The reversal of 2564464256203 is 3026524644652.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2564464256203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2564464256273) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 98871288 + ... + 98897221.

It is an arithmetic number, because the mean of its divisors is an integer number (641165509420).

Almost surely, 2^{2564464256203} is an apocalyptic number.

2564464256203 is a deficient number, since it is larger than the sum of its proper divisors (197781477).

2564464256203 is a wasteful number, since it uses less digits than its factorization.

2564464256203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197781476.

The product of its (nonzero) digits is 8294400, while the sum is 49.

The spelling of 2564464256203 in words is "two trillion, five hundred sixty-four billion, four hundred sixty-four million, two hundred fifty-six thousand, two hundred three".