245355221500243 has 8 divisors (see below), whose sum is σ = 247007859056640. Its totient is φ = 243707599536840.

The previous prime is 245355221500237. The next prime is 245355221500253. The reversal of 245355221500243 is 342005122553542.

It is a happy number.

245355221500243 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 245355221500243 - 2²⁵ = 245355187945811 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 245355221500243.

It is not an unprimeable number, because it can be changed into a prime (245355221500253) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1253800083 + ... + 1253995756.

It is an arithmetic number, because the mean of its divisors is an integer number (30875982382080).

Almost surely, 2^{245355221500243} is an apocalyptic number.

245355221500243 is a deficient number, since it is larger than the sum of its proper divisors (1652637556397).

245355221500243 is a wasteful number, since it uses less digits than its factorization.

245355221500243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2507796497.

The product of its (nonzero) digits is 1440000, while the sum is 43.

The spelling of 245355221500243 in words is "two hundred forty-five trillion, three hundred fifty-five billion, two hundred twenty-one million, five hundred thousand, two hundred forty-three".