30642250644 has 96 divisors (see below), whose sum is σ = 84186063360. Its totient is φ = 9605246976.

The previous prime is 30642250621. The next prime is 30642250673. The reversal of 30642250644 is 44605224603.

30642250644 is a `hidden beast` number, since 3 + 0 + 6 + 4 + 2 + 2 + 5 + 0 + 644 = 666.

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

It is a junction number, because it is equal to n+sod(n) for n = 30642250599 and 30642250608.

It is a congruent number.

It is an unprimeable number.

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, 2430084 + ... + 2442660.

It is an arithmetic number, because the mean of its divisors is an integer number (876938160).

Almost surely, 2^30642250644 is an apocalyptic number.

30642250644 is a gapful number since it is divisible by the number (34) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30642250644, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42093031680).

30642250644 is an abundant number, since it is smaller than the sum of its proper divisors (53543812716).

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

30642250644 is a wasteful number, since it uses less digits than its factorization.

30642250644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13934 (or 13926 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 36.

The spelling of 30642250644 in words is "thirty billion, six hundred forty-two million, two hundred fifty thousand, six hundred forty-four".