19677830681 has 8 divisors (see below), whose sum is σ = 20772864000. Its totient is φ = 18588733200.

The previous prime is 19677830663. The next prime is 19677830743. The reversal of 19677830681 is 18603877691.

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 19677830681 - 2¹⁰ = 19677829657 is a prime.

It is a super-2 number, since 2×19677830681² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19677830881) 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, 1477145 + ... + 1490406.

It is an arithmetic number, because the mean of its divisors is an integer number (2596608000).

Almost surely, 2^19677830681 is an apocalyptic number.

It is an amenable number.

19677830681 is a deficient number, since it is larger than the sum of its proper divisors (1095033319).

19677830681 is a wasteful number, since it uses less digits than its factorization.

19677830681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2967919.

The product of its (nonzero) digits is 3048192, while the sum is 56.

The spelling of 19677830681 in words is "nineteen billion, six hundred seventy-seven million, eight hundred thirty thousand, six hundred eighty-one".