20245847297 has 6 divisors (see below), whose sum is σ = 21923018262. Its totient is φ = 18688474272.

The previous prime is 20245847269. The next prime is 20245847299. The reversal of 20245847297 is 79274854202.

It can be written as a sum of positive squares in 3 ways, for example, as 148815601 + 20097031696 = 12199^2 + 141764^2 .

It is not a de Polignac number, because 20245847297 - 2¹⁶ = 20245781761 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20245847299) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 59898788 + ... + 59899125.

It is an arithmetic number, because the mean of its divisors is an integer number (3653836377).

Almost surely, 2^20245847297 is an apocalyptic number.

It is an amenable number.

20245847297 is a deficient number, since it is larger than the sum of its proper divisors (1677170965).

20245847297 is a wasteful number, since it uses less digits than its factorization.

20245847297 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119797939 (or 119797926 counting only the distinct ones).

The product of its (nonzero) digits is 2257920, while the sum is 50.

The spelling of 20245847297 in words is "twenty billion, two hundred forty-five million, eight hundred forty-seven thousand, two hundred ninety-seven".