30074725821 has 16 divisors (see below), whose sum is σ = 46692837504. Its totient is φ = 16861301184.

The previous prime is 30074725817. The next prime is 30074725843. The reversal of 30074725821 is 12852747003.

It is not a de Polignac number, because 30074725821 - 2² = 30074725817 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 30074725821.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30074715821) 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, 13509546 + ... + 13511771.

It is an arithmetic number, because the mean of its divisors is an integer number (2918302344).

Almost surely, 2^30074725821 is an apocalyptic number.

It is an amenable number.

30074725821 is a deficient number, since it is larger than the sum of its proper divisors (16618111683).

30074725821 is a wasteful number, since it uses less digits than its factorization.

30074725821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27021380.

The product of its (nonzero) digits is 94080, while the sum is 39.

The spelling of 30074725821 in words is "thirty billion, seventy-four million, seven hundred twenty-five thousand, eight hundred twenty-one".