335550505421 has 2 divisors, whose sum is σ = 335550505422. Its totient is φ = 335550505420.

The previous prime is 335550505397. The next prime is 335550505457. The reversal of 335550505421 is 124505055533.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 212622432100 + 122928073321 = 461110^2 + 350611^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-335550505421 is a prime.

It is a super-2 number, since 2×335550505421² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (335550505481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 167775252710 + 167775252711.

It is an arithmetic number, because the mean of its divisors is an integer number (167775252711).

Almost surely, 2^335550505421 is an apocalyptic number.

It is an amenable number.

335550505421 is a deficient number, since it is larger than the sum of its proper divisors (1).

335550505421 is an equidigital number, since it uses as much as digits as its factorization.

335550505421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 225000, while the sum is 38.

The spelling of 335550505421 in words is "three hundred thirty-five billion, five hundred fifty million, five hundred five thousand, four hundred twenty-one".