264440612036405 has 64 divisors (see below), whose sum is σ = 379504576708608. Its totient is φ = 173070090478080.

The previous prime is 264440612036327. The next prime is 264440612036423. The reversal of 264440612036405 is 504630216044462.

It is not a de Polignac number, because 264440612036405 - 2¹⁴ = 264440612020021 is a prime.

It is a super-2 number, since 2×264440612036405² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 264440612036405.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2343381914 + ... + 2343494756.

It is an arithmetic number, because the mean of its divisors is an integer number (5929759011072).

Almost surely, 2^{264440612036405} is an apocalyptic number.

It is an amenable number.

264440612036405 is a deficient number, since it is larger than the sum of its proper divisors (115063964672203).

264440612036405 is a wasteful number, since it uses less digits than its factorization.

264440612036405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142546.

The product of its (nonzero) digits is 3317760, while the sum is 47.

The spelling of 264440612036405 in words is "two hundred sixty-four trillion, four hundred forty billion, six hundred twelve million, thirty-six thousand, four hundred five".