616464401232013 has 2 divisors, whose sum is σ = 616464401232014. Its totient is φ = 616464401232012.

The previous prime is 616464401231993. The next prime is 616464401232037. The reversal of 616464401232013 is 310232104464616.

616464401232013 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., 590108940296964 + 26355460935049 = 24292158^2 + 5133757^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-616464401232013 is a prime.

It is a super-2 number, since 2×616464401232013² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (616464401232083) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 308232200616006 + 308232200616007.

It is an arithmetic number, because the mean of its divisors is an integer number (308232200616007).

Almost surely, 2^{616464401232013} is an apocalyptic number.

It is an amenable number.

616464401232013 is a deficient number, since it is larger than the sum of its proper divisors (1).

616464401232013 is an equidigital number, since it uses as much as digits as its factorization.

616464401232013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 497664, while the sum is 43.

Adding to 616464401232013 its reverse (310232104464616), we get a palindrome (926696505696629).

The spelling of 616464401232013 in words is "six hundred sixteen trillion, four hundred sixty-four billion, four hundred one million, two hundred thirty-two thousand, thirteen".