260444321615 has 8 divisors (see below), whose sum is σ = 319182828480. Its totient is φ = 203922362272.

The previous prime is 260444321597. The next prime is 260444321647. The reversal of 260444321615 is 516123444062.

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 260444321615 - 2³² = 256149354319 is a prime.

It is a super-2 number, since 2×260444321615² (a number of 24 digits) contains 22 as substring.

It is a congruent 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 7 ways as a sum of consecutive naturals, for example, 554136620 + ... + 554137089.

It is an arithmetic number, because the mean of its divisors is an integer number (39897853560).

Almost surely, 2^260444321615 is an apocalyptic number.

260444321615 is a deficient number, since it is larger than the sum of its proper divisors (58738506865).

260444321615 is a wasteful number, since it uses less digits than its factorization.

260444321615 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1108273761.

The product of its (nonzero) digits is 138240, while the sum is 38.

Adding to 260444321615 its reverse (516123444062), we get a palindrome (776567765677).

The spelling of 260444321615 in words is "two hundred sixty billion, four hundred forty-four million, three hundred twenty-one thousand, six hundred fifteen".