30218878372 has 6 divisors (see below), whose sum is σ = 52883037158. Its totient is φ = 15109439184.

The previous prime is 30218878369. The next prime is 30218878397. The reversal of 30218878372 is 27387881203.

It can be written as a sum of positive squares in only one way, i.e., 20507958436 + 9710919936 = 143206^2 + 98544^2 .

It is a super-2 number, since 2×30218878372² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3777359793 + ... + 3777359800.

Almost surely, 2^30218878372 is an apocalyptic number.

It is an amenable number.

30218878372 is a deficient number, since it is larger than the sum of its proper divisors (22664158786).

30218878372 is a wasteful number, since it uses less digits than its factorization.

30218878372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7554719597 (or 7554719595 counting only the distinct ones).

The product of its (nonzero) digits is 903168, while the sum is 49.

The spelling of 30218878372 in words is "thirty billion, two hundred eighteen million, eight hundred seventy-eight thousand, three hundred seventy-two".