245036636505 has 12 divisors (see below), whose sum is σ = 424730170020. Its totient is φ = 130686206112.

The previous prime is 245036636491. The next prime is 245036636521. The reversal of 245036636505 is 505636630542.

245036636505 is a `hidden beast` number, since 2 + 4 + 5 + 0 + 3 + 6 + 636 + 5 + 0 + 5 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 150790092489 + 94246544016 = 388317^2 + 306996^2 .

It is not a de Polignac number, because 245036636505 - 2⁵ = 245036636473 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 5445258589 = 245036636505 / (2 + 4 + 5 + 0 + 3 + 6 + 6 + 3 + 6 + 5 + 0 + 5).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2722629250 + ... + 2722629339.

It is an arithmetic number, because the mean of its divisors is an integer number (35394180835).

Almost surely, 2^245036636505 is an apocalyptic number.

It is an amenable number.

245036636505 is a deficient number, since it is larger than the sum of its proper divisors (179693533515).

245036636505 is a wasteful number, since it uses less digits than its factorization.

245036636505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5445258600 (or 5445258597 counting only the distinct ones).

The product of its (nonzero) digits is 1944000, while the sum is 45.

The spelling of 245036636505 in words is "two hundred forty-five billion, thirty-six million, six hundred thirty-six thousand, five hundred five".