245842772543 has 4 divisors (see below), whose sum is σ = 246056364288. Its totient is φ = 245629180800.

The previous prime is 245842772479. The next prime is 245842772573. The reversal of 245842772543 is 345277248542.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 345277248542 = 2 ⋅172638624271.

It is a cyclic number.

It is not a de Polignac number, because 245842772543 - 2⁶ = 245842772479 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245842772573) 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, 106794146 + ... + 106796447.

It is an arithmetic number, because the mean of its divisors is an integer number (61514091072).

Almost surely, 2^245842772543 is an apocalyptic number.

245842772543 is a deficient number, since it is larger than the sum of its proper divisors (213591745).

245842772543 is a wasteful number, since it uses less digits than its factorization.

245842772543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213591744.

The product of its digits is 15052800, while the sum is 53.

The spelling of 245842772543 in words is "two hundred forty-five billion, eight hundred forty-two million, seven hundred seventy-two thousand, five hundred forty-three".