245271972959 has 4 divisors (see below), whose sum is σ = 264139047816. Its totient is φ = 226404898104.

The previous prime is 245271972893. The next prime is 245271973003. The reversal of 245271972959 is 959279172542.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-245271972959 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245271975959) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9433537409 + ... + 9433537434.

It is an arithmetic number, because the mean of its divisors is an integer number (66034761954).

Almost surely, 2^245271972959 is an apocalyptic number.

245271972959 is a deficient number, since it is larger than the sum of its proper divisors (18867074857).

245271972959 is a wasteful number, since it uses less digits than its factorization.

245271972959 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18867074856.

The product of its digits is 28576800, while the sum is 62.

The spelling of 245271972959 in words is "two hundred forty-five billion, two hundred seventy-one million, nine hundred seventy-two thousand, nine hundred fifty-nine".