242635646291 has 2 divisors, whose sum is σ = 242635646292. Its totient is φ = 242635646290.

The previous prime is 242635646243. The next prime is 242635646333. The reversal of 242635646291 is 192646536242.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 242635646291 - 2²² = 242631451987 is a prime.

It is not a weakly prime, because it can be changed into another prime (242635646791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121317823145 + 121317823146.

It is an arithmetic number, because the mean of its divisors is an integer number (121317823146).

Almost surely, 2^242635646291 is an apocalyptic number.

242635646291 is a deficient number, since it is larger than the sum of its proper divisors (1).

242635646291 is an equidigital number, since it uses as much as digits as its factorization.

242635646291 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3732480, while the sum is 50.

The spelling of 242635646291 in words is "two hundred forty-two billion, six hundred thirty-five million, six hundred forty-six thousand, two hundred ninety-one".