20245245151 has 4 divisors (see below), whose sum is σ = 20245693600. Its totient is φ = 20244796704.

The previous prime is 20245245143. The next prime is 20245245179. The reversal of 20245245151 is 15154254202.

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

It is a cyclic number.

It is not a de Polignac number, because 20245245151 - 2³ = 20245245143 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 (20245245131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 147831 + ... + 249688.

It is an arithmetic number, because the mean of its divisors is an integer number (5061423400).

Almost surely, 2^20245245151 is an apocalyptic number.

20245245151 is a deficient number, since it is larger than the sum of its proper divisors (448449).

20245245151 is an equidigital number, since it uses as much as digits as its factorization.

20245245151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 448448.

The product of its (nonzero) digits is 16000, while the sum is 31.

Adding to 20245245151 its reverse (15154254202), we get a palindrome (35399499353).

The spelling of 20245245151 in words is "twenty billion, two hundred forty-five million, two hundred forty-five thousand, one hundred fifty-one".