30551868437 has 2 divisors, whose sum is σ = 30551868438. Its totient is φ = 30551868436.

The previous prime is 30551868397. The next prime is 30551868493. The reversal of 30551868437 is 73486815503.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28114570276 + 2437298161 = 167674^2 + 49369^2 .

It is a cyclic number.

It is not a de Polignac number, because 30551868437 - 2¹⁴ = 30551852053 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30551868637) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15275934218 + 15275934219.

It is an arithmetic number, because the mean of its divisors is an integer number (15275934219).

Almost surely, 2^30551868437 is an apocalyptic number.

It is an amenable number.

30551868437 is a deficient number, since it is larger than the sum of its proper divisors (1).

30551868437 is an equidigital number, since it uses as much as digits as its factorization.

30551868437 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2419200, while the sum is 50.

The spelling of 30551868437 in words is "thirty billion, five hundred fifty-one million, eight hundred sixty-eight thousand, four hundred thirty-seven".