505621453427 has 2 divisors, whose sum is σ = 505621453428. Its totient is φ = 505621453426.

The previous prime is 505621453423. The next prime is 505621453451. The reversal of 505621453427 is 724354126505.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 505621453427 - 2² = 505621453423 is a prime.

It is not a weakly prime, because it can be changed into another prime (505621453423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252810726713 + 252810726714.

It is an arithmetic number, because the mean of its divisors is an integer number (252810726714).

Almost surely, 2^505621453427 is an apocalyptic number.

505621453427 is a deficient number, since it is larger than the sum of its proper divisors (1).

505621453427 is an equidigital number, since it uses as much as digits as its factorization.

505621453427 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1008000, while the sum is 44.

The spelling of 505621453427 in words is "five hundred five billion, six hundred twenty-one million, four hundred fifty-three thousand, four hundred twenty-seven".