264660447765 has 32 divisors (see below), whose sum is σ = 491884160256. Its totient is φ = 119004226560.

The previous prime is 264660447739. The next prime is 264660447767. The reversal of 264660447765 is 567744066462.

It is a happy number.

It is not a de Polignac number, because 264660447765 - 2¹³ = 264660439573 is a prime.

It is a super-2 number, since 2×264660447765² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (264660447767) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 20654052 + ... + 20666861.

It is an arithmetic number, because the mean of its divisors is an integer number (15371380008).

Almost surely, 2^264660447765 is an apocalyptic number.

It is an amenable number.

264660447765 is a deficient number, since it is larger than the sum of its proper divisors (227223712491).

264660447765 is a wasteful number, since it uses less digits than its factorization.

264660447765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41320989.

The product of its (nonzero) digits is 40642560, while the sum is 57.

The spelling of 264660447765 in words is "two hundred sixty-four billion, six hundred sixty million, four hundred forty-seven thousand, seven hundred sixty-five".