245311121020 has 24 divisors (see below), whose sum is σ = 588746690784. Its totient is φ = 84106670016.

The previous prime is 245311120919. The next prime is 245311121093. The reversal of 245311121020 is 20121113542.

It is a junction number, because it is equal to n+sod(n) for n = 245311120982 and 245311121000.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 876111007 + ... + 876111286.

It is an arithmetic number, because the mean of its divisors is an integer number (24531112116).

Almost surely, 2^245311121020 is an apocalyptic number.

245311121020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

245311121020 is an abundant number, since it is smaller than the sum of its proper divisors (343435569764).

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

245311121020 is a wasteful number, since it uses less digits than its factorization.

245311121020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1752222309 (or 1752222307 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 22.

Adding to 245311121020 its reverse (20121113542), we get a palindrome (265432234562).

The spelling of 245311121020 in words is "two hundred forty-five billion, three hundred eleven million, one hundred twenty-one thousand, twenty".