129219210489623 has 2 divisors, whose sum is σ = 129219210489624. Its totient is φ = 129219210489622.

The previous prime is 129219210489547. The next prime is 129219210489647. The reversal of 129219210489623 is 326984012912921.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 129219210489623 - 2³² = 129214915522327 is a prime.

It is a super-2 number, since 2×129219210489623² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (129219210486623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64609605244811 + 64609605244812.

It is an arithmetic number, because the mean of its divisors is an integer number (64609605244812).

Almost surely, 2^{129219210489623} is an apocalyptic number.

129219210489623 is a deficient number, since it is larger than the sum of its proper divisors (1).

129219210489623 is an equidigital number, since it uses as much as digits as its factorization.

129219210489623 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6718464, while the sum is 59.

The spelling of 129219210489623 in words is "one hundred twenty-nine trillion, two hundred nineteen billion, two hundred ten million, four hundred eighty-nine thousand, six hundred twenty-three".