30621056364 has 72 divisors (see below), whose sum is σ = 79665401088. Its totient is φ = 9913004640.

The previous prime is 30621056299. The next prime is 30621056383. The reversal of 30621056364 is 46365012603.

30621056364 is a `hidden beast` number, since 3 + 0 + 6 + 2 + 10 + 5 + 636 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 81849 + ... + 260655.

It is an arithmetic number, because the mean of its divisors is an integer number (1106463904).

Almost surely, 2^30621056364 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30621056364, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39832700544).

30621056364 is an abundant number, since it is smaller than the sum of its proper divisors (49044344724).

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

30621056364 is a wasteful number, since it uses less digits than its factorization.

30621056364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178955 (or 178950 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 36.

Adding to 30621056364 its reverse (46365012603), we get a palindrome (76986068967).

The spelling of 30621056364 in words is "thirty billion, six hundred twenty-one million, fifty-six thousand, three hundred sixty-four".