264428809668 has 72 divisors (see below), whose sum is σ = 707913970400. Its totient is φ = 82991506176.

The previous prime is 264428809639. The next prime is 264428809699. The reversal of 264428809668 is 866908824462.

264428809668 is a `hidden beast` number, since 2 + 64 + 428 + 8 + 0 + 96 + 68 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1074373 + ... + 1297356.

Almost surely, 2^264428809668 is an apocalyptic number.

It is an amenable number.

264428809668 is an abundant number, since it is smaller than the sum of its proper divisors (443485160732).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

264428809668 is a wasteful number, since it uses less digits than its factorization.

264428809668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2371921 (or 2371916 counting only the distinct ones).

The product of its (nonzero) digits is 63700992, while the sum is 63.

The spelling of 264428809668 in words is "two hundred sixty-four billion, four hundred twenty-eight million, eight hundred nine thousand, six hundred sixty-eight".