245140856399 has 4 divisors (see below), whose sum is σ = 245142341136. Its totient is φ = 245139371664.

The previous prime is 245140856339. The next prime is 245140856413. The reversal of 245140856399 is 993658041542.

245140856399 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 245140856399 - 2³² = 240845889103 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245140856339) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 458534 + ... + 836979.

It is an arithmetic number, because the mean of its divisors is an integer number (61285585284).

Almost surely, 2^245140856399 is an apocalyptic number.

245140856399 is a deficient number, since it is larger than the sum of its proper divisors (1484737).

245140856399 is a wasteful number, since it uses less digits than its factorization.

245140856399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1484736.

The product of its (nonzero) digits is 9331200, while the sum is 56.

The spelling of 245140856399 in words is "two hundred forty-five billion, one hundred forty million, eight hundred fifty-six thousand, three hundred ninety-nine".