245363311021 has 16 divisors (see below), whose sum is σ = 250473899200. Its totient is φ = 240290064000.

The previous prime is 245363310977. The next prime is 245363311051. The reversal of 245363311021 is 120113363542.

It is a cyclic number.

It is not a de Polignac number, because 245363311021 - 2²⁵ = 245329756589 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 (245363311051) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13885690 + ... + 13903348.

It is an arithmetic number, because the mean of its divisors is an integer number (15654618700).

Almost surely, 2^245363311021 is an apocalyptic number.

It is an amenable number.

245363311021 is a deficient number, since it is larger than the sum of its proper divisors (5110588179).

245363311021 is a wasteful number, since it uses less digits than its factorization.

245363311021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18700.

The product of its (nonzero) digits is 12960, while the sum is 31.

Adding to 245363311021 its reverse (120113363542), we get a palindrome (365476674563).

The spelling of 245363311021 in words is "two hundred forty-five billion, three hundred sixty-three million, three hundred eleven thousand, twenty-one".