55816463629 has 2 divisors, whose sum is σ = 55816463630. Its totient is φ = 55816463628.

The previous prime is 55816463621. The next prime is 55816463669. The reversal of 55816463629 is 92636461855.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 43849197604 + 11967266025 = 209402^2 + 109395^2 .

It is a cyclic number.

It is not a de Polignac number, because 55816463629 - 2³ = 55816463621 is a prime.

It is a super-2 number, since 2×55816463629² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 55816463629.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55816463621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27908231814 + 27908231815.

It is an arithmetic number, because the mean of its divisors is an integer number (27908231815).

Almost surely, 2^55816463629 is an apocalyptic number.

It is an amenable number.

55816463629 is a deficient number, since it is larger than the sum of its proper divisors (1).

55816463629 is an equidigital number, since it uses as much as digits as its factorization.

55816463629 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9331200, while the sum is 55.

The spelling of 55816463629 in words is "fifty-five billion, eight hundred sixteen million, four hundred sixty-three thousand, six hundred twenty-nine".