30220891951 has 2 divisors, whose sum is σ = 30220891952. Its totient is φ = 30220891950.

The previous prime is 30220891937. The next prime is 30220891991. The reversal of 30220891951 is 15919802203.

It is an a-pointer prime, because the next prime (30220891991) can be obtained adding 30220891951 to its sum of digits (40).

It is a weak prime.

It is an emirp because it is prime and its reverse (15919802203) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 30220891951 - 2⁵ = 30220891919 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30220891991) 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 as a sum of consecutive naturals, namely, 15110445975 + 15110445976.

It is an arithmetic number, because the mean of its divisors is an integer number (15110445976).

Almost surely, 2^30220891951 is an apocalyptic number.

30220891951 is a deficient number, since it is larger than the sum of its proper divisors (1).

30220891951 is an equidigital number, since it uses as much as digits as its factorization.

30220891951 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 38880, while the sum is 40.

The spelling of 30220891951 in words is "thirty billion, two hundred twenty million, eight hundred ninety-one thousand, nine hundred fifty-one".