260449243993 has 4 divisors (see below), whose sum is σ = 274157098960. Its totient is φ = 246741389028.

The previous prime is 260449243969. The next prime is 260449244059. The reversal of 260449243993 is 399342944062.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-260449243993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (260449243913) 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, 6853927455 + ... + 6853927492.

It is an arithmetic number, because the mean of its divisors is an integer number (68539274740).

Almost surely, 2^260449243993 is an apocalyptic number.

It is an amenable number.

260449243993 is a deficient number, since it is larger than the sum of its proper divisors (13707854967).

260449243993 is a wasteful number, since it uses less digits than its factorization.

260449243993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13707854966.

The product of its (nonzero) digits is 10077696, while the sum is 55.

The spelling of 260449243993 in words is "two hundred sixty billion, four hundred forty-nine million, two hundred forty-three thousand, nine hundred ninety-three".