245440535430551 has 4 divisors (see below), whose sum is σ = 248802734546112. Its totient is φ = 242078336314992.

The previous prime is 245440535430539. The next prime is 245440535430599. The reversal of 245440535430551 is 155034535044542.

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

It is a cyclic number.

It is not a de Polignac number, because 245440535430551 - 2²⁶ = 245440468321687 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 245440535430551.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245440535430751) 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, 1681099557671 + ... + 1681099557816.

It is an arithmetic number, because the mean of its divisors is an integer number (62200683636528).

Almost surely, 2^{245440535430551} is an apocalyptic number.

245440535430551 is a deficient number, since it is larger than the sum of its proper divisors (3362199115561).

245440535430551 is an equidigital number, since it uses as much as digits as its factorization.

245440535430551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3362199115560.

The product of its (nonzero) digits is 14400000, while the sum is 50.

The spelling of 245440535430551 in words is "two hundred forty-five trillion, four hundred forty billion, five hundred thirty-five million, four hundred thirty thousand, five hundred fifty-one".