129923703066 has 16 divisors (see below), whose sum is σ = 259881927264. Its totient is φ = 43302147504.

The previous prime is 129923703061. The next prime is 129923703131. The reversal of 129923703066 is 660307329921.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (129923703061) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1389325 + ... + 1479888.

It is an arithmetic number, because the mean of its divisors is an integer number (16242620454).

Almost surely, 2^129923703066 is an apocalyptic number.

129923703066 is an abundant number, since it is smaller than the sum of its proper divisors (129958224198).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

129923703066 is a wasteful number, since it uses less digits than its factorization.

129923703066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2876765.

The product of its (nonzero) digits is 734832, while the sum is 48.

The spelling of 129923703066 in words is "one hundred twenty-nine billion, nine hundred twenty-three million, seven hundred three thousand, sixty-six".