245712541636 has 9 divisors (see below), whose sum is σ = 429998682799. Its totient is φ = 122855775124.

The previous prime is 245712541631. The next prime is 245712541637. The reversal of 245712541636 is 636145217542.

The square root of 245712541636 is 495694.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (245712541631) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 867465 + ... + 1115311.

Almost surely, 2^245712541636 is an apocalyptic number.

245712541636 is the 495694-th square number.

It is an amenable number.

245712541636 is a deficient number, since it is larger than the sum of its proper divisors (184286141163).

245712541636 is an frugal number, since it uses more digits than its factorization.

245712541636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 495698 (or 247849 counting only the distinct ones).

The product of its digits is 1209600, while the sum is 46.

The spelling of 245712541636 in words is "two hundred forty-five billion, seven hundred twelve million, five hundred forty-one thousand, six hundred thirty-six".