264502312343243 has 4 divisors (see below), whose sum is σ = 284848644061968. Its totient is φ = 244155980624520.

The previous prime is 264502312343141. The next prime is 264502312343273. The reversal of 264502312343243 is 342343213205462.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-264502312343243 is a prime.

It is a super-2 number, since 2×264502312343243² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 264502312343194 and 264502312343203.

It is not an unprimeable number, because it can be changed into a prime (264502312343273) 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, 10173165859343 + ... + 10173165859368.

It is an arithmetic number, because the mean of its divisors is an integer number (71212161015492).

Almost surely, 2^{264502312343243} is an apocalyptic number.

264502312343243 is a deficient number, since it is larger than the sum of its proper divisors (20346331718725).

264502312343243 is a wasteful number, since it uses less digits than its factorization.

264502312343243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20346331718724.

The product of its (nonzero) digits is 2488320, while the sum is 44.

The spelling of 264502312343243 in words is "two hundred sixty-four trillion, five hundred two billion, three hundred twelve million, three hundred forty-three thousand, two hundred forty-three".