681488141903 has 4 divisors (see below), whose sum is σ = 721575679680. Its totient is φ = 641400604128.

The previous prime is 681488141891. The next prime is 681488141909. The reversal of 681488141903 is 309141884186.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 681488141903 - 2⁶ = 681488141839 is a prime.

It is a super-2 number, since 2×681488141903² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (681488141909) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20043768863 + ... + 20043768896.

It is an arithmetic number, because the mean of its divisors is an integer number (180393919920).

Almost surely, 2^681488141903 is an apocalyptic number.

681488141903 is a deficient number, since it is larger than the sum of its proper divisors (40087537777).

681488141903 is a wasteful number, since it uses less digits than its factorization.

681488141903 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40087537776.

The product of its (nonzero) digits is 1327104, while the sum is 53.

The spelling of 681488141903 in words is "six hundred eighty-one billion, four hundred eighty-eight million, one hundred forty-one thousand, nine hundred three".