245661005363013 has 12 divisors (see below), whose sum is σ = 354851284302060. Its totient is φ = 163770491318976.

The previous prime is 245661005363009. The next prime is 245661005363047. The reversal of 245661005363013 is 310363500166542.

245661005363013 is a `hidden beast` number, since 2 + 4 + 5 + 6 + 6 + 1 + 0 + 0 + 5 + 3 + 630 + 1 + 3 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 153873530548929 + 91787474814084 = 12404577^2 + 9580578^2 .

It is not a de Polignac number, because 245661005363013 - 2² = 245661005363009 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 245661005363013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245661005363003) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 292245018 + ... + 293084411.

It is an arithmetic number, because the mean of its divisors is an integer number (29570940358505).

Almost surely, 2^{245661005363013} is an apocalyptic number.

It is an amenable number.

245661005363013 is a deficient number, since it is larger than the sum of its proper divisors (109190278939047).

245661005363013 is a wasteful number, since it uses less digits than its factorization.

245661005363013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 585376068 (or 585376065 counting only the distinct ones).

The product of its (nonzero) digits is 1166400, while the sum is 45.

The spelling of 245661005363013 in words is "two hundred forty-five trillion, six hundred sixty-one billion, five million, three hundred sixty-three thousand, thirteen".