264432644265020 has 96 divisors (see below), whose sum is σ = 692368545415680. Its totient is φ = 82416302058240.

The previous prime is 264432644265017. The next prime is 264432644265037. The reversal of 264432644265020 is 20562446234462.

It is a super-2 number, since 2×264432644265020² (a number of 30 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 264432644265020.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 25413362 + ... + 34273958.

It is an arithmetic number, because the mean of its divisors is an integer number (7212172348080).

Almost surely, 2^{264432644265020} is an apocalyptic number.

264432644265020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

264432644265020 is an abundant number, since it is smaller than the sum of its proper divisors (427935901150660).

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

264432644265020 is a wasteful number, since it uses less digits than its factorization.

264432644265020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8880003 (or 8880001 counting only the distinct ones).

The product of its (nonzero) digits is 13271040, while the sum is 50.

The spelling of 264432644265020 in words is "two hundred sixty-four trillion, four hundred thirty-two billion, six hundred forty-four million, two hundred sixty-five thousand, twenty".