30128102797 has 16 divisors (see below), whose sum is σ = 34370889840. Its totient is φ = 26161938432.

The previous prime is 30128102789. The next prime is 30128102803. The reversal of 30128102797 is 79720182103.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 468029956 + 29660072841 = 21634^2 + 172221^2 .

It is a cyclic number.

It is not a de Polignac number, because 30128102797 - 2³ = 30128102789 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30128102777) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 438493 + ... + 502525.

It is an arithmetic number, because the mean of its divisors is an integer number (2148180615).

Almost surely, 2^30128102797 is an apocalyptic number.

It is an amenable number.

30128102797 is a deficient number, since it is larger than the sum of its proper divisors (4242787043).

30128102797 is a wasteful number, since it uses less digits than its factorization.

30128102797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66192.

The product of its (nonzero) digits is 42336, while the sum is 40.

The spelling of 30128102797 in words is "thirty billion, one hundred twenty-eight million, one hundred two thousand, seven hundred ninety-seven".