30251045040440 has 64 divisors (see below), whose sum is σ = 79685679648960. Its totient is φ = 10118816455680.

The previous prime is 30251045040439. The next prime is 30251045040473. The reversal of 30251045040440 is 4404054015203.

It is a junction number, because it is equal to n+sod(n) for n = 30251045040397 and 30251045040406.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1317542747 + ... + 1317565706.

It is an arithmetic number, because the mean of its divisors is an integer number (1245088744515).

Almost surely, 2^{30251045040440} is an apocalyptic number.

It is an amenable number.

30251045040440 is an abundant number, since it is smaller than the sum of its proper divisors (49434634608520).

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

30251045040440 is a wasteful number, since it uses less digits than its factorization.

30251045040440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2635108512 (or 2635108508 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 32.

Adding to 30251045040440 its reverse (4404054015203), we get a palindrome (34655099055643).

The spelling of 30251045040440 in words is "thirty trillion, two hundred fifty-one billion, forty-five million, forty thousand, four hundred forty".