30180612681 has 48 divisors (see below), whose sum is σ = 47503872000. Its totient is φ = 18394011360.

The previous prime is 30180612677. The next prime is 30180612697. The reversal of 30180612681 is 18621608103.

30180612681 is a `hidden beast` number, since 30 + 1 + 8 + 0 + 612 + 6 + 8 + 1 = 666.

It is not a de Polignac number, because 30180612681 - 2² = 30180612677 is a prime.

It is a super-2 number, since 2×30180612681² (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (30180612641) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1895130 + ... + 1910988.

It is an arithmetic number, because the mean of its divisors is an integer number (989664000).

Almost surely, 2^30180612681 is an apocalyptic number.

30180612681 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

30180612681 is a deficient number, since it is larger than the sum of its proper divisors (17323259319).

30180612681 is a wasteful number, since it uses less digits than its factorization.

30180612681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16274 (or 16271 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 36.

The spelling of 30180612681 in words is "thirty billion, one hundred eighty million, six hundred twelve thousand, six hundred eighty-one".