243626761131451 has 2 divisors, whose sum is σ = 243626761131452. Its totient is φ = 243626761131450.

The previous prime is 243626761131433. The next prime is 243626761131511. The reversal of 243626761131451 is 154131167626342.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 243626761131451 - 2⁹ = 243626761130939 is a prime.

It is not a weakly prime, because it can be changed into another prime (243626761131421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121813380565725 + 121813380565726.

It is an arithmetic number, because the mean of its divisors is an integer number (121813380565726).

Almost surely, 2^{243626761131451} is an apocalyptic number.

243626761131451 is a deficient number, since it is larger than the sum of its proper divisors (1).

243626761131451 is an equidigital number, since it uses as much as digits as its factorization.

243626761131451 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4354560, while the sum is 52.

The spelling of 243626761131451 in words is "two hundred forty-three trillion, six hundred twenty-six billion, seven hundred sixty-one million, one hundred thirty-one thousand, four hundred fifty-one".