264501026605 has 16 divisors (see below), whose sum is σ = 331535637504. Its totient is φ = 202196459520.

The previous prime is 264501026561. The next prime is 264501026617. The reversal of 264501026605 is 506620105462.

It is not a de Polignac number, because 264501026605 - 2¹⁵ = 264500993837 is a prime.

It is a Duffinian number.

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, 1046484 + ... + 1274413.

It is an arithmetic number, because the mean of its divisors is an integer number (20720977344).

Almost surely, 2^264501026605 is an apocalyptic number.

It is an amenable number.

264501026605 is a deficient number, since it is larger than the sum of its proper divisors (67034610899).

264501026605 is a wasteful number, since it uses less digits than its factorization.

264501026605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2321916.

The product of its (nonzero) digits is 86400, while the sum is 37.

The spelling of 264501026605 in words is "two hundred sixty-four billion, five hundred one million, twenty-six thousand, six hundred five".