245023513254121 has 16 divisors (see below), whose sum is σ = 285767576838400. Its totient is φ = 210001139460000.

The previous prime is 245023513254071. The next prime is 245023513254133. The reversal of 245023513254121 is 121452315320542.

It is not a de Polignac number, because 245023513254121 - 2¹⁷ = 245023513123049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (245023513252121) 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, 28543380 + ... + 36121621.

It is an arithmetic number, because the mean of its divisors is an integer number (17860473552400).

Almost surely, 2^{245023513254121} is an apocalyptic number.

It is an amenable number.

245023513254121 is a deficient number, since it is larger than the sum of its proper divisors (40744063584279).

245023513254121 is an equidigital number, since it uses as much as digits as its factorization.

245023513254121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64676069 (or 64676055 counting only the distinct ones).

The product of its (nonzero) digits is 288000, while the sum is 40.

Adding to 245023513254121 its reverse (121452315320542), we get a palindrome (366475828574663).

The spelling of 245023513254121 in words is "two hundred forty-five trillion, twenty-three billion, five hundred thirteen million, two hundred fifty-four thousand, one hundred twenty-one".