245642411545 has 4 divisors (see below), whose sum is σ = 294770893860. Its totient is φ = 196513929232.

The previous prime is 245642411491. The next prime is 245642411579. The reversal of 245642411545 is 545114246542.

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

It can be written as a sum of positive squares in 2 ways, for example, as 161233568521 + 84408843024 = 401539^2 + 290532^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-245642411545 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24564241150 + ... + 24564241159.

It is an arithmetic number, because the mean of its divisors is an integer number (73692723465).

Almost surely, 2^245642411545 is an apocalyptic number.

It is an amenable number.

245642411545 is a deficient number, since it is larger than the sum of its proper divisors (49128482315).

245642411545 is an equidigital number, since it uses as much as digits as its factorization.

245642411545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49128482314.

The product of its digits is 768000, while the sum is 43.

The spelling of 245642411545 in words is "two hundred forty-five billion, six hundred forty-two million, four hundred eleven thousand, five hundred forty-five".