245644442651 has 8 divisors (see below), whose sum is σ = 251873259264. Its totient is φ = 239439087720.

The previous prime is 245644442573. The next prime is 245644442653. The reversal of 245644442651 is 156244446542.

245644442651 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 a de Polignac number, because none of the positive numbers 2^k-245644442651 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 245644442596 and 245644442605.

It is not an unprimeable number, because it can be changed into a prime (245644442653) 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 7 ways as a sum of consecutive naturals, for example, 5844215 + ... + 5886096.

It is an arithmetic number, because the mean of its divisors is an integer number (31484157408).

Almost surely, 2^245644442651 is an apocalyptic number.

245644442651 is a deficient number, since it is larger than the sum of its proper divisors (6228816613).

245644442651 is a wasteful number, since it uses less digits than its factorization.

245644442651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11730841.

The product of its digits is 3686400, while the sum is 47.

The spelling of 245644442651 in words is "two hundred forty-five billion, six hundred forty-four million, four hundred forty-two thousand, six hundred fifty-one".