363540769421 has 2 divisors, whose sum is σ = 363540769422. Its totient is φ = 363540769420.

The previous prime is 363540769393. The next prime is 363540769439. The reversal of 363540769421 is 124967045363.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 224594479396 + 138946290025 = 473914^2 + 372755^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-363540769421 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 363540769421.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (363540769451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 181770384710 + 181770384711.

It is an arithmetic number, because the mean of its divisors is an integer number (181770384711).

Almost surely, 2^363540769421 is an apocalyptic number.

It is an amenable number.

363540769421 is a deficient number, since it is larger than the sum of its proper divisors (1).

363540769421 is an equidigital number, since it uses as much as digits as its factorization.

363540769421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3265920, while the sum is 50.

The spelling of 363540769421 in words is "three hundred sixty-three billion, five hundred forty million, seven hundred sixty-nine thousand, four hundred twenty-one".