245342544251 has 24 divisors (see below), whose sum is σ = 300873148416. Its totient is φ = 199179887760.

The previous prime is 245342544217. The next prime is 245342544259. The reversal of 245342544251 is 152445243542.

It is a de Polignac number, because none of the positive numbers 2^k-245342544251 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 245342544199 and 245342544208.

It is not an unprimeable number, because it can be changed into a prime (245342544259) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1646861 + ... + 1789646.

It is an arithmetic number, because the mean of its divisors is an integer number (12536381184).

Almost surely, 2^245342544251 is an apocalyptic number.

245342544251 is a deficient number, since it is larger than the sum of its proper divisors (55530604165).

245342544251 is a wasteful number, since it uses less digits than its factorization.

245342544251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3436599 (or 3436592 counting only the distinct ones).

The product of its digits is 768000, while the sum is 41.

Adding to 245342544251 its reverse (152445243542), we get a palindrome (397787787793).

The spelling of 245342544251 in words is "two hundred forty-five billion, three hundred forty-two million, five hundred forty-four thousand, two hundred fifty-one".