681467748480 has 160 divisors (see below), whose sum is σ = 2433644557740. Its totient is φ = 181724719104.

The previous prime is 681467748473. The next prime is 681467748527. The reversal of 681467748480 is 84847764186.

681467748480 is a `hidden beast` number, since 6 + 8 + 1 + 4 + 6 + 77 + 484 + 80 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 645528688704 + 35939059776 = 803448^2 + 189576^2 .

It is a tau number, because it is divible by the number of its divisors (160).

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 6520959 + ... + 6624638.

Almost surely, 2^681467748480 is an apocalyptic number.

681467748480 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

681467748480 is an abundant number, since it is smaller than the sum of its proper divisors (1752176809260).

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

681467748480 is a wasteful number, since it uses less digits than its factorization.

681467748480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13145628 (or 13145607 counting only the distinct ones).

The product of its (nonzero) digits is 57802752, while the sum is 63.

The spelling of 681467748480 in words is "six hundred eighty-one billion, four hundred sixty-seven million, seven hundred forty-eight thousand, four hundred eighty".