245100242121155 has 4 divisors (see below), whose sum is σ = 294120290545392. Its totient is φ = 196080193696920.

The previous prime is 245100242121139. The next prime is 245100242121181. The reversal of 245100242121155 is 551121242001542.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 245100242121155 - 2⁴ = 245100242121139 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24510024212111 + ... + 24510024212120.

It is an arithmetic number, because the mean of its divisors is an integer number (73530072636348).

Almost surely, 2^{245100242121155} is an apocalyptic number.

245100242121155 is a deficient number, since it is larger than the sum of its proper divisors (49020048424237).

245100242121155 is an equidigital number, since it uses as much as digits as its factorization.

245100242121155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49020048424236.

The product of its (nonzero) digits is 32000, while the sum is 35.

Adding to 245100242121155 its reverse (551121242001542), we get a palindrome (796221484122697).

The spelling of 245100242121155 in words is "two hundred forty-five trillion, one hundred billion, two hundred forty-two million, one hundred twenty-one thousand, one hundred fifty-five".