245791356779 has 4 divisors (see below), whose sum is σ = 245794692984. Its totient is φ = 245788020576.

The previous prime is 245791356773. The next prime is 245791356799. The reversal of 245791356779 is 977653197542.

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

It is a cyclic number.

It is not a de Polignac number, because 245791356779 - 2¹² = 245791352683 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (245791356773) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1555037 + ... + 1705790.

It is an arithmetic number, because the mean of its divisors is an integer number (61448673246).

Almost surely, 2^245791356779 is an apocalyptic number.

245791356779 is a deficient number, since it is larger than the sum of its proper divisors (3336205).

245791356779 is an equidigital number, since it uses as much as digits as its factorization.

245791356779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3336204.

The product of its digits is 100018800, while the sum is 65.

The spelling of 245791356779 in words is "two hundred forty-five billion, seven hundred ninety-one million, three hundred fifty-six thousand, seven hundred seventy-nine".