30565221340 has 48 divisors (see below), whose sum is σ = 67955922720. Its totient is φ = 11515633920.

The previous prime is 30565221329. The next prime is 30565221347. The reversal of 30565221340 is 4312256503.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30565221347) by changing a digit.

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 in 15 ways as a sum of consecutive naturals, for example, 166731 + ... + 298210.

It is an arithmetic number, because the mean of its divisors is an integer number (1415748390).

Almost surely, 2^30565221340 is an apocalyptic number.

It is an amenable number.

30565221340 is an abundant number, since it is smaller than the sum of its proper divisors (37390701380).

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

30565221340 is a wasteful number, since it uses less digits than its factorization.

30565221340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 465142 (or 465140 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 31.

Adding to 30565221340 its reverse (4312256503), we get a palindrome (34877477843).

The spelling of 30565221340 in words is "thirty billion, five hundred sixty-five million, two hundred twenty-one thousand, three hundred forty".