242433199991 has 2 divisors, whose sum is σ = 242433199992. Its totient is φ = 242433199990.

The previous prime is 242433199969. The next prime is 242433200027. The reversal of 242433199991 is 199991334242.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 242433199991 - 2²⁶ = 242366091127 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (242433199901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121216599995 + 121216599996.

It is an arithmetic number, because the mean of its divisors is an integer number (121216599996).

Almost surely, 2^242433199991 is an apocalyptic number.

242433199991 is a deficient number, since it is larger than the sum of its proper divisors (1).

242433199991 is an equidigital number, since it uses as much as digits as its factorization.

242433199991 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3779136, while the sum is 56.

The spelling of 242433199991 in words is "two hundred forty-two billion, four hundred thirty-three million, one hundred ninety-nine thousand, nine hundred ninety-one".