264510065613661 has 128 divisors (see below), whose sum is σ = 356063662080000. Its totient is φ = 191027264716800.

The previous prime is 264510065613653. The next prime is 264510065613697. The reversal of 264510065613661 is 166316560015462.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 264510065613661 - 2³ = 264510065613653 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 264510065613599 and 264510065613608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (264510065613601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 615955341 + ... + 616384621.

It is an arithmetic number, because the mean of its divisors is an integer number (2781747360000).

Almost surely, 2^{264510065613661} is an apocalyptic number.

It is an amenable number.

264510065613661 is a deficient number, since it is larger than the sum of its proper divisors (91553596466339).

264510065613661 is a wasteful number, since it uses less digits than its factorization.

264510065613661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 429563.

The product of its (nonzero) digits is 4665600, while the sum is 52.

The spelling of 264510065613661 in words is "two hundred sixty-four trillion, five hundred ten billion, sixty-five million, six hundred thirteen thousand, six hundred sixty-one".