244645072465 has 4 divisors (see below), whose sum is σ = 293574086964. Its totient is φ = 195716057968.

The previous prime is 244645072459. The next prime is 244645072487. The reversal of 244645072465 is 564270546442.

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

It can be written as a sum of positive squares in 2 ways, for example, as 54110203456 + 190534869009 = 232616^2 + 436503^2 .

It is a cyclic number.

It is not a de Polignac number, because 244645072465 - 2¹³ = 244645064273 is a prime.

It is a super-2 number, since 2×244645072465² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24464507242 + ... + 24464507251.

It is an arithmetic number, because the mean of its divisors is an integer number (73393521741).

Almost surely, 2^244645072465 is an apocalyptic number.

It is an amenable number.

244645072465 is a deficient number, since it is larger than the sum of its proper divisors (48929014499).

244645072465 is an equidigital number, since it uses as much as digits as its factorization.

244645072465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48929014498.

The product of its (nonzero) digits is 6451200, while the sum is 49.

The spelling of 244645072465 in words is "two hundred forty-four billion, six hundred forty-five million, seventy-two thousand, four hundred sixty-five".