245144651357 has 4 divisors (see below), whose sum is σ = 248502797340. Its totient is φ = 241786505376.

The previous prime is 245144651351. The next prime is 245144651363. The reversal of 245144651357 is 753156441542.

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

It is an interprime number because it is at equal distance from previous prime (245144651351) and next prime (245144651363).

It can be written as a sum of positive squares in 2 ways, for example, as 51479525881 + 193665125476 = 226891^2 + 440074^2 .

It is a cyclic number.

It is not a de Polignac number, because 245144651357 - 2⁶ = 245144651293 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 (245144651351) 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, 1679072882 + ... + 1679073027.

It is an arithmetic number, because the mean of its divisors is an integer number (62125699335).

Almost surely, 2^245144651357 is an apocalyptic number.

It is an amenable number.

245144651357 is a deficient number, since it is larger than the sum of its proper divisors (3358145983).

245144651357 is an equidigital number, since it uses as much as digits as its factorization.

245144651357 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3358145982.

The product of its digits is 2016000, while the sum is 47.

The spelling of 245144651357 in words is "two hundred forty-five billion, one hundred forty-four million, six hundred fifty-one thousand, three hundred fifty-seven".