30521625044 has 24 divisors (see below), whose sum is σ = 53886701568. Its totient is φ = 15126003360.

The previous prime is 30521625011. The next prime is 30521625083. The reversal of 30521625044 is 44052612503.

It is a self number, because there is not a number n which added to its sum of digits gives 30521625044.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 139517 + ... + 283739.

It is an arithmetic number, because the mean of its divisors is an integer number (2245279232).

Almost surely, 2^30521625044 is an apocalyptic number.

It is an amenable number.

30521625044 is a deficient number, since it is larger than the sum of its proper divisors (23365076524).

30521625044 is a wasteful number, since it uses less digits than its factorization.

30521625044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144695 (or 144693 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 32.

The spelling of 30521625044 in words is "thirty billion, five hundred twenty-one million, six hundred twenty-five thousand, forty-four".