264638936463 has 32 divisors (see below), whose sum is σ = 405501020160. Its totient is φ = 151828719840.

The previous prime is 264638936377. The next prime is 264638936473. The reversal of 264638936463 is 364639836462.

It is not a de Polignac number, because 264638936463 - 2¹⁴ = 264638920079 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 264638936397 and 264638936406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (264638936473) 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, 655020 + ... + 978942.

It is an arithmetic number, because the mean of its divisors is an integer number (12671906880).

Almost surely, 2^264638936463 is an apocalyptic number.

264638936463 is a deficient number, since it is larger than the sum of its proper divisors (140862083697).

264638936463 is a wasteful number, since it uses less digits than its factorization.

264638936463 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 325259.

The product of its digits is 80621568, while the sum is 60.

The spelling of 264638936463 in words is "two hundred sixty-four billion, six hundred thirty-eight million, nine hundred thirty-six thousand, four hundred sixty-three".