30381066628951 has 2 divisors, whose sum is σ = 30381066628952. Its totient is φ = 30381066628950.

The previous prime is 30381066628949. The next prime is 30381066628981. The reversal of 30381066628951 is 15982666018303.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 30381066628951 - 2¹ = 30381066628949 is a prime.

It is a super-2 number, since 2×30381066628951² (a number of 28 digits) contains 22 as substring.

Together with 30381066628949, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30381066628981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15190533314475 + 15190533314476.

It is an arithmetic number, because the mean of its divisors is an integer number (15190533314476).

Almost surely, 2^{30381066628951} is an apocalyptic number.

30381066628951 is a deficient number, since it is larger than the sum of its proper divisors (1).

30381066628951 is an equidigital number, since it uses as much as digits as its factorization.

30381066628951 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11197440, while the sum is 58.

The spelling of 30381066628951 in words is "thirty trillion, three hundred eighty-one billion, sixty-six million, six hundred twenty-eight thousand, nine hundred fifty-one".