30842694879991 has 2 divisors, whose sum is σ = 30842694879992. Its totient is φ = 30842694879990.

The previous prime is 30842694879973. The next prime is 30842694880009. The reversal of 30842694879991 is 19997849624803.

It is a balanced prime because it is at equal distance from previous prime (30842694879973) and next prime (30842694880009).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30842694879991 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30842694879691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15421347439995 + 15421347439996.

It is an arithmetic number, because the mean of its divisors is an integer number (15421347439996).

Almost surely, 2^{30842694879991} is an apocalyptic number.

30842694879991 is a deficient number, since it is larger than the sum of its proper divisors (1).

30842694879991 is an equidigital number, since it uses as much as digits as its factorization.

30842694879991 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1693052928, while the sum is 79.

The spelling of 30842694879991 in words is "thirty trillion, eight hundred forty-two billion, six hundred ninety-four million, eight hundred seventy-nine thousand, nine hundred ninety-one".