681471448001 has 8 divisors (see below), whose sum is σ = 683468860584. Its totient is φ = 679474414080.

The previous prime is 681471447983. The next prime is 681471448033. The reversal of 681471448001 is 100844174186.

It can be written as a sum of positive squares in 4 ways, for example, as 164999252401 + 516472195600 = 406201^2 + 718660^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 681471448001 - 2²⁶ = 681404339137 is a prime.

It is a super-3 number, since 3×681471448001³ (a number of 36 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (681471447001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3736391 + ... + 3914531.

It is an arithmetic number, because the mean of its divisors is an integer number (85433607573).

Almost surely, 2^681471448001 is an apocalyptic number.

It is an amenable number.

681471448001 is a deficient number, since it is larger than the sum of its proper divisors (1997412583).

681471448001 is a wasteful number, since it uses less digits than its factorization.

681471448001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189331.

The product of its (nonzero) digits is 172032, while the sum is 44.

The spelling of 681471448001 in words is "six hundred eighty-one billion, four hundred seventy-one million, four hundred forty-eight thousand, one".