30667999680 has 168 divisors, whose sum is σ = 109392274992. Its totient is φ = 8178112512.

The previous prime is 30667999669. The next prime is 30667999717. The reversal of 30667999680 is 8699976603.

It is a Smith number, since the sum of its digits (63) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 119437 + ... + 274956.

It is an arithmetic number, because the mean of its divisors is an integer number (651144494).

Almost surely, 2^30667999680 is an apocalyptic number.

30667999680 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

30667999680 is an abundant number, since it is smaller than the sum of its proper divisors (78724275312).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

30667999680 is an equidigital number, since it uses as much as digits as its factorization.

30667999680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 394425 (or 394403 counting only the distinct ones).

The product of its (nonzero) digits is 26453952, while the sum is 63.

The spelling of 30667999680 in words is "thirty billion, six hundred sixty-seven million, nine hundred ninety-nine thousand, six hundred eighty".