421623062603 has 2 divisors, whose sum is σ = 421623062604. Its totient is φ = 421623062602.

The previous prime is 421623062599. The next prime is 421623062657. The reversal of 421623062603 is 306260326124.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 421623062603 - 2² = 421623062599 is a prime.

It is not a weakly prime, because it can be changed into another prime (421623062803) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210811531301 + 210811531302.

It is an arithmetic number, because the mean of its divisors is an integer number (210811531302).

Almost surely, 2^421623062603 is an apocalyptic number.

421623062603 is a deficient number, since it is larger than the sum of its proper divisors (1).

421623062603 is an equidigital number, since it uses as much as digits as its factorization.

421623062603 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 62208, while the sum is 35.

Adding to 421623062603 its reverse (306260326124), we get a palindrome (727883388727).

The spelling of 421623062603 in words is "four hundred twenty-one billion, six hundred twenty-three million, sixty-two thousand, six hundred three".