129493771298089 has 9 divisors (see below), whose sum is σ = 142336266371229. Its totient is φ = 117721496475660.

The previous prime is 129493771298077. The next prime is 129493771298113. The reversal of 129493771298089 is 980892177394921.

The square root of 129493771298089 is 11379533.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 129493771298089 - 2⁵ = 129493771298057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (129493771298189) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 124657612 + ... + 125692114.

Almost surely, 2^{129493771298089} is an apocalyptic number.

129493771298089 is the 11379533-rd square number.

129493771298089 is the 5689767-th centered octagonal number.

It is an amenable number.

129493771298089 is a deficient number, since it is larger than the sum of its proper divisors (12842495073140).

129493771298089 is an frugal number, since it uses more digits than its factorization.

129493771298089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2069028 (or 1034514 counting only the distinct ones).

The product of its (nonzero) digits is 987614208, while the sum is 79.

The spelling of 129493771298089 in words is "one hundred twenty-nine trillion, four hundred ninety-three billion, seven hundred seventy-one million, two hundred ninety-eight thousand, eighty-nine".