264947361648 has 40 divisors (see below), whose sum is σ = 702945932688. Its totient is φ = 85928873472.

The previous prime is 264947361617. The next prime is 264947361683. The reversal of 264947361648 is 846163749462.

It is a super-2 number, since 2×264947361648² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 264947361591 and 264947361600.

It is a congruent number.

It is an unprimeable number.

It is an upside-down number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 74589261 + ... + 74592812.

Almost surely, 2^264947361648 is an apocalyptic number.

It is an amenable number.

264947361648 is an abundant number, since it is smaller than the sum of its proper divisors (437998571040).

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

264947361648 is a wasteful number, since it uses less digits than its factorization.

264947361648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149182121 (or 149182115 counting only the distinct ones).

The product of its digits is 41803776, while the sum is 60.

The spelling of 264947361648 in words is "two hundred sixty-four billion, nine hundred forty-seven million, three hundred sixty-one thousand, six hundred forty-eight".