264440612031005 has 16 divisors (see below), whose sum is σ = 319293685200960. Its totient is φ = 210242670000768.

The previous prime is 264440612030971. The next prime is 264440612031023. The reversal of 264440612031005 is 500130216044462.

It is a cyclic number.

It is not a de Polignac number, because 264440612031005 - 2³⁶ = 264371892554269 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 264440612031005.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5138234 + ... + 23564436.

It is an arithmetic number, because the mean of its divisors is an integer number (19955855325060).

Almost surely, 2^{264440612031005} is an apocalyptic number.

It is an amenable number.

264440612031005 is a deficient number, since it is larger than the sum of its proper divisors (54853073169955).

264440612031005 is a wasteful number, since it uses less digits than its factorization.

264440612031005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18443980.

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

Adding to 264440612031005 its reverse (500130216044462), we get a palindrome (764570828075467).

The spelling of 264440612031005 in words is "two hundred sixty-four trillion, four hundred forty billion, six hundred twelve million, thirty-one thousand, five".