30555490681 has 16 divisors (see below), whose sum is σ = 31483219968. Its totient is φ = 29640486400.

The previous prime is 30555490673. The next prime is 30555490717. The reversal of 30555490681 is 18609455503.

It is a cyclic number.

It is not a de Polignac number, because 30555490681 - 2³ = 30555490673 is a prime.

It is a super-2 number, since 2×30555490681² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (30555490981) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2516481 + ... + 2528593.

It is an arithmetic number, because the mean of its divisors is an integer number (1967701248).

Almost surely, 2^30555490681 is an apocalyptic number.

It is an amenable number.

30555490681 is a deficient number, since it is larger than the sum of its proper divisors (927729287).

30555490681 is a wasteful number, since it uses less digits than its factorization.

30555490681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12632.

The product of its (nonzero) digits is 648000, while the sum is 46.

The spelling of 30555490681 in words is "thirty billion, five hundred fifty-five million, four hundred ninety thousand, six hundred eighty-one".