30191198661139 has 2 divisors, whose sum is σ = 30191198661140. Its totient is φ = 30191198661138.

The previous prime is 30191198661103. The next prime is 30191198661179. The reversal of 30191198661139 is 93116689119103.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 30191198661139 - 2⁷ = 30191198661011 is a prime.

It is a super-2 number, since 2×30191198661139² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (30191198661179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15095599330569 + 15095599330570.

It is an arithmetic number, because the mean of its divisors is an integer number (15095599330570).

Almost surely, 2^{30191198661139} is an apocalyptic number.

30191198661139 is a deficient number, since it is larger than the sum of its proper divisors (1).

30191198661139 is an equidigital number, since it uses as much as digits as its factorization.

30191198661139 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1889568, while the sum is 58.

The spelling of 30191198661139 in words is "thirty trillion, one hundred ninety-one billion, one hundred ninety-eight million, six hundred sixty-one thousand, one hundred thirty-nine".