30315978912 has 48 divisors (see below), whose sum is σ = 79601780160. Its totient is φ = 10102490112.

The previous prime is 30315978883. The next prime is 30315978929. The reversal of 30315978912 is 21987951303.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 314568 + ... + 399480.

It is an arithmetic number, because the mean of its divisors is an integer number (1658370420).

Almost surely, 2^30315978912 is an apocalyptic number.

30315978912 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

30315978912 is an abundant number, since it is smaller than the sum of its proper divisors (49285801248).

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

30315978912 is a wasteful number, since it uses less digits than its factorization.

30315978912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88645 (or 88637 counting only the distinct ones).

The product of its (nonzero) digits is 408240, while the sum is 48.

The spelling of 30315978912 in words is "thirty billion, three hundred fifteen million, nine hundred seventy-eight thousand, nine hundred twelve".