629616215429 has 2 divisors, whose sum is σ = 629616215430. Its totient is φ = 629616215428.

The previous prime is 629616215323. The next prime is 629616215441. The reversal of 629616215429 is 924512616926.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 553275630625 + 76340584804 = 743825^2 + 276298^2 .

It is a cyclic number.

It is not a de Polignac number, because 629616215429 - 2³⁶ = 560896738693 is a prime.

It is a super-2 number, since 2×629616215429² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (629616215729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 314808107714 + 314808107715.

It is an arithmetic number, because the mean of its divisors is an integer number (314808107715).

Almost surely, 2^629616215429 is an apocalyptic number.

It is an amenable number.

629616215429 is a deficient number, since it is larger than the sum of its proper divisors (1).

629616215429 is an equidigital number, since it uses as much as digits as its factorization.

629616215429 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2799360, while the sum is 53.

The spelling of 629616215429 in words is "six hundred twenty-nine billion, six hundred sixteen million, two hundred fifteen thousand, four hundred twenty-nine".