260340479999 has 4 divisors (see below), whose sum is σ = 269317737960. Its totient is φ = 251363222040.

The previous prime is 260340479957. The next prime is 260340480073. The reversal of 260340479999 is 999974043062.

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 260340479999 - 2⁸ = 260340479743 is a prime.

It is a super-2 number, since 2×260340479999² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (260340478999) 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, 4488628937 + ... + 4488628994.

It is an arithmetic number, because the mean of its divisors is an integer number (67329434490).

Almost surely, 2^260340479999 is an apocalyptic number.

260340479999 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

260340479999 is a deficient number, since it is larger than the sum of its proper divisors (8977257961).

260340479999 is an equidigital number, since it uses as much as digits as its factorization.

260340479999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8977257960.

The product of its (nonzero) digits is 26453952, while the sum is 62.

The spelling of 260340479999 in words is "two hundred sixty billion, three hundred forty million, four hundred seventy-nine thousand, nine hundred ninety-nine".