30668928516 has 18 divisors (see below), whose sum is σ = 77524236062. Its totient is φ = 10222976160.

The previous prime is 30668928509. The next prime is 30668928547. The reversal of 30668928516 is 61582986603.

It is a happy number.

30668928516 is a `hidden beast` number, since 30 + 6 + 6 + 8 + 92 + 8 + 516 = 666.

It can be written as a sum of positive squares in only one way, i.e., 29942841600 + 726086916 = 173040^2 + 26946^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 425957305 + ... + 425957376.

Almost surely, 2^30668928516 is an apocalyptic number.

30668928516 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

30668928516 is an abundant number, since it is smaller than the sum of its proper divisors (46855307546).

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

30668928516 is a wasteful number, since it uses less digits than its factorization.

30668928516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 851914691 (or 851914686 counting only the distinct ones).

The product of its (nonzero) digits is 3732480, while the sum is 54.

It can be divided in two parts, 30668928 and 516, that added together give a square (30669444 = 5538²).

The spelling of 30668928516 in words is "thirty billion, six hundred sixty-eight million, nine hundred twenty-eight thousand, five hundred sixteen".