30091933451 has 2 divisors, whose sum is σ = 30091933452. Its totient is φ = 30091933450.

The previous prime is 30091933409. The next prime is 30091933453. The reversal of 30091933451 is 15433919003.

It is a strong prime.

It is an emirp because it is prime and its reverse (15433919003) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 30091933451 - 2¹⁴ = 30091917067 is a prime.

Together with 30091933453, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (30091933453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15045966725 + 15045966726.

It is an arithmetic number, because the mean of its divisors is an integer number (15045966726).

Almost surely, 2^30091933451 is an apocalyptic number.

30091933451 is a deficient number, since it is larger than the sum of its proper divisors (1).

30091933451 is an equidigital number, since it uses as much as digits as its factorization.

30091933451 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 43740, while the sum is 38.

The spelling of 30091933451 in words is "thirty billion, ninety-one million, nine hundred thirty-three thousand, four hundred fifty-one".