30278052797 has 2 divisors, whose sum is σ = 30278052798. Its totient is φ = 30278052796.

The previous prime is 30278052751. The next prime is 30278052839. The reversal of 30278052797 is 79725087203.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 29056270681 + 1221782116 = 170459^2 + 34954^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30278052797 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30278052197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15139026398 + 15139026399.

It is an arithmetic number, because the mean of its divisors is an integer number (15139026399).

Almost surely, 2^30278052797 is an apocalyptic number.

It is an amenable number.

30278052797 is a deficient number, since it is larger than the sum of its proper divisors (1).

30278052797 is an equidigital number, since it uses as much as digits as its factorization.

30278052797 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1481760, while the sum is 50.

The spelling of 30278052797 in words is "thirty billion, two hundred seventy-eight million, fifty-two thousand, seven hundred ninety-seven".