2567493964243 has 4 divisors (see below), whose sum is σ = 2764993499968. Its totient is φ = 2369994428520.

The previous prime is 2567493964229. The next prime is 2567493964247. The reversal of 2567493964243 is 3424693947652.

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-2567493964243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2567493964247) 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, 98749767843 + ... + 98749767868.

It is an arithmetic number, because the mean of its divisors is an integer number (691248374992).

Almost surely, 2^{2567493964243} is an apocalyptic number.

2567493964243 is a deficient number, since it is larger than the sum of its proper divisors (197499535725).

2567493964243 is a wasteful number, since it uses less digits than its factorization.

2567493964243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197499535724.

The product of its digits is 235146240, while the sum is 64.

The spelling of 2567493964243 in words is "two trillion, five hundred sixty-seven billion, four hundred ninety-three million, nine hundred sixty-four thousand, two hundred forty-three".