263728694484720 has 160 divisors (see below), whose sum is σ = 908417657548800. Its totient is φ = 70326194754816.

The previous prime is 263728694484709. The next prime is 263728694484763. The reversal of 263728694484720 is 27484496827362.

263728694484720 is a `hidden beast` number, since 2 + 6 + 3 + 7 + 28 + 6 + 94 + 48 + 472 + 0 = 666.

It is a super-2 number, since 2×263728694484720² (a number of 30 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 105081441 + ... + 107561919.

It is an arithmetic number, because the mean of its divisors is an integer number (5677610359680).

Almost surely, 2^{263728694484720} is an apocalyptic number.

263728694484720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

263728694484720 is an abundant number, since it is smaller than the sum of its proper divisors (644688963064080).

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

263728694484720 is a wasteful number, since it uses less digits than its factorization.

263728694484720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2529724 (or 2529712 counting only the distinct ones).

The product of its (nonzero) digits is 1560674304, while the sum is 72.

The spelling of 263728694484720 in words is "two hundred sixty-three trillion, seven hundred twenty-eight billion, six hundred ninety-four million, four hundred eighty-four thousand, seven hundred twenty".