663072423401 has 2 divisors, whose sum is σ = 663072423402. Its totient is φ = 663072423400.

The previous prime is 663072423389. The next prime is 663072423421. The reversal of 663072423401 is 104324270366.

663072423401 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 504811671001 + 158260752400 = 710501^2 + 397820^2 .

It is a cyclic number.

It is not a de Polignac number, because 663072423401 - 2⁶ = 663072423337 is a prime.

It is not a weakly prime, because it can be changed into another prime (663072423421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 331536211700 + 331536211701.

It is an arithmetic number, because the mean of its divisors is an integer number (331536211701).

Almost surely, 2^663072423401 is an apocalyptic number.

It is an amenable number.

663072423401 is a deficient number, since it is larger than the sum of its proper divisors (1).

663072423401 is an equidigital number, since it uses as much as digits as its factorization.

663072423401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 145152, while the sum is 38.

Adding to 663072423401 its reverse (104324270366), we get a palindrome (767396693767).

The spelling of 663072423401 in words is "six hundred sixty-three billion, seventy-two million, four hundred twenty-three thousand, four hundred one".