1305630621423 has 12 divisors (see below), whose sum is σ = 1931908724928. Its totient is φ = 849190647840.

The previous prime is 1305630621409. The next prime is 1305630621461. The reversal of 1305630621423 is 3241260365031.

1305630621423 is a `hidden beast` number, since 1 + 3 + 0 + 5 + 6 + 3 + 0 + 621 + 4 + 23 = 666.

It is not a de Polignac number, because 1305630621423 - 2⁶ = 1305630621359 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1305630621023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1769146815 + ... + 1769147552.

It is an arithmetic number, because the mean of its divisors is an integer number (160992393744).

Almost surely, 2^{1305630621423} is an apocalyptic number.

1305630621423 is a deficient number, since it is larger than the sum of its proper divisors (626278103505).

1305630621423 is a wasteful number, since it uses less digits than its factorization.

1305630621423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3538294414 (or 3538294411 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 36.

Adding to 1305630621423 its reverse (3241260365031), we get a palindrome (4546890986454).

The spelling of 1305630621423 in words is "one trillion, three hundred five billion, six hundred thirty million, six hundred twenty-one thousand, four hundred twenty-three".