30421688915 has 16 divisors (see below), whose sum is σ = 36614229120. Its totient is φ = 24265292160.

The previous prime is 30421688911. The next prime is 30421688917. The reversal of 30421688915 is 51988612403.

It is a happy number.

It is not a de Polignac number, because 30421688915 - 2² = 30421688911 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 30421688915.

It is not an unprimeable number, because it can be changed into a prime (30421688911) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4300001 + ... + 4307069.

It is an arithmetic number, because the mean of its divisors is an integer number (2288389320).

Almost surely, 2^30421688915 is an apocalyptic number.

30421688915 is a deficient number, since it is larger than the sum of its proper divisors (6192540205).

30421688915 is a wasteful number, since it uses less digits than its factorization.

30421688915 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9502.

The product of its (nonzero) digits is 414720, while the sum is 47.

The spelling of 30421688915 in words is "thirty billion, four hundred twenty-one million, six hundred eighty-eight thousand, nine hundred fifteen".