245312021244 has 12 divisors (see below), whose sum is σ = 572394716264. Its totient is φ = 81770673744.

The previous prime is 245312021233. The next prime is 245312021287. The reversal of 245312021244 is 442120213542.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10221334207 + ... + 10221334230.

Almost surely, 2^245312021244 is an apocalyptic number.

It is an amenable number.

245312021244 is an abundant number, since it is smaller than the sum of its proper divisors (327082695020).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

245312021244 is a wasteful number, since it uses less digits than its factorization.

245312021244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20442668444 (or 20442668442 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 30.

Adding to 245312021244 its reverse (442120213542), we get a palindrome (687432234786).

The spelling of 245312021244 in words is "two hundred forty-five billion, three hundred twelve million, twenty-one thousand, two hundred forty-four".