264628855851889 has 9 divisors (see below), whose sum is σ = 276635092989913. Its totient is φ = 253122895540372.

The previous prime is 264628855851793. The next prime is 264628855851923. The reversal of 264628855851889 is 988158558826462.

The square root of 264628855851889 is 16267417.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 264628855851889 - 2¹⁵ = 264628855819121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (264628855851089) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 373796952 + ... + 374504230.

Almost surely, 2^{264628855851889} is an apocalyptic number.

264628855851889 is the 16267417-th square number.

264628855851889 is the 8133709-th centered octagonal number.

It is an amenable number.

264628855851889 is a deficient number, since it is larger than the sum of its proper divisors (12006237138024).

264628855851889 is an frugal number, since it uses more digits than its factorization.

264628855851889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1414604 (or 707302 counting only the distinct ones).

The product of its digits is 21233664000, while the sum is 85.

The spelling of 264628855851889 in words is "two hundred sixty-four trillion, six hundred twenty-eight billion, eight hundred fifty-five million, eight hundred fifty-one thousand, eight hundred eighty-nine".