30521045320000 has 70 divisors (see below), whose sum is σ = 75682273153058. Its totient is φ = 12208418112000.

The previous prime is 30521045319967. The next prime is 30521045320027. The reversal of 30521045320000 is 2354012503.

It can be written as a sum of positive squares in 5 ways, for example, as 10286234470656 + 20234810849344 = 3207216^2 + 4498312^2 .

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 381473067 + ... + 381553066.

Almost surely, 2^{30521045320000} is an apocalyptic number.

It is an amenable number.

30521045320000 is an abundant number, since it is smaller than the sum of its proper divisors (45161227833058).

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

30521045320000 is an frugal number, since it uses more digits than its factorization.

30521045320000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 763026165 (or 763026140 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 25.

Adding to 30521045320000 its reverse (2354012503), we get a palindrome (30523399332503).

The spelling of 30521045320000 in words is "thirty trillion, five hundred twenty-one billion, forty-five million, three hundred twenty thousand".