30719856868 has 96 divisors (see below), whose sum is σ = 61583639040. Its totient is φ = 13317696000.

The previous prime is 30719856863. The next prime is 30719856889. The reversal of 30719856868 is 86865891703.

It is not an unprimeable number, because it can be changed into a prime (30719856863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13943455 + ... + 13945657.

It is an arithmetic number, because the mean of its divisors is an integer number (641496240).

Almost surely, 2^30719856868 is an apocalyptic number.

30719856868 is a gapful number since it is divisible by the number (38) formed by its first and last digit.

It is an amenable number.

30719856868 is an abundant number, since it is smaller than the sum of its proper divisors (30863782172).

30719856868 is a wasteful number, since it uses less digits than its factorization.

30719856868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2537 (or 2535 counting only the distinct ones).

The product of its (nonzero) digits is 17418240, while the sum is 61.

The spelling of 30719856868 in words is "thirty billion, seven hundred nineteen million, eight hundred fifty-six thousand, eight hundred sixty-eight".