245415646121 has 4 divisors (see below), whose sum is σ = 245479377744. Its totient is φ = 245351914500.

The previous prime is 245415646087. The next prime is 245415646129. The reversal of 245415646121 is 121646514542.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 245415646121 - 2¹⁸ = 245415383977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (245415646129) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31860035 + ... + 31867736.

It is an arithmetic number, because the mean of its divisors is an integer number (61369844436).

Almost surely, 2^245415646121 is an apocalyptic number.

It is an amenable number.

245415646121 is a deficient number, since it is larger than the sum of its proper divisors (63731623).

245415646121 is an equidigital number, since it uses as much as digits as its factorization.

245415646121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63731622.

The product of its digits is 230400, while the sum is 41.

The spelling of 245415646121 in words is "two hundred forty-five billion, four hundred fifteen million, six hundred forty-six thousand, one hundred twenty-one".