264406254634643 has 16 divisors (see below), whose sum is σ = 299220672326400. Its totient is φ = 231434260555680.

The previous prime is 264406254634637. The next prime is 264406254634693. The reversal of 264406254634643 is 346436452604462.

It is a cyclic number.

It is not a de Polignac number, because 264406254634643 - 2⁶ = 264406254634579 is a prime.

It is a super-4 number, since 4×264406254634643⁴ (a number of 59 digits) contains 4444 as substring.

It is not an unprimeable number, because it can be changed into a prime (264406254634693) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1154286221 + ... + 1154515262.

It is an arithmetic number, because the mean of its divisors is an integer number (18701292020400).

Almost surely, 2^{264406254634643} is an apocalyptic number.

264406254634643 is a deficient number, since it is larger than the sum of its proper divisors (34814417691757).

264406254634643 is a wasteful number, since it uses less digits than its factorization.

264406254634643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2308801882.

The product of its (nonzero) digits is 238878720, while the sum is 59.

The spelling of 264406254634643 in words is "two hundred sixty-four trillion, four hundred six billion, two hundred fifty-four million, six hundred thirty-four thousand, six hundred forty-three".