245505606634 has 4 divisors (see below), whose sum is σ = 368258409954. Its totient is φ = 122752803316.

The previous prime is 245505606631. The next prime is 245505606667. The reversal of 245505606634 is 436606505542.

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

It can be written as a sum of positive squares in only one way, i.e., 186749301025 + 58756305609 = 432145^2 + 242397^2 .

It is not an unprimeable number, because it can be changed into a prime (245505606631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61376401657 + ... + 61376401660.

Almost surely, 2^245505606634 is an apocalyptic number.

245505606634 is a deficient number, since it is larger than the sum of its proper divisors (122752803320).

245505606634 is a wasteful number, since it uses less digits than its factorization.

245505606634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122752803319.

The product of its (nonzero) digits is 2592000, while the sum is 46.

The spelling of 245505606634 in words is "two hundred forty-five billion, five hundred five million, six hundred six thousand, six hundred thirty-four".