129219077492 has 12 divisors (see below), whose sum is σ = 226406829600. Its totient is φ = 64531411896.

The previous prime is 129219077473. The next prime is 129219077591. The reversal of 129219077492 is 294770912921.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19527992 + ... + 19534607.

It is an arithmetic number, because the mean of its divisors is an integer number (18867235800).

Almost surely, 2^129219077492 is an apocalyptic number.

It is an amenable number.

129219077492 is a deficient number, since it is larger than the sum of its proper divisors (97187752108).

129219077492 is a wasteful number, since it uses less digits than its factorization.

129219077492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39063430 (or 39063428 counting only the distinct ones).

The product of its (nonzero) digits is 1143072, while the sum is 53.

The spelling of 129219077492 in words is "one hundred twenty-nine billion, two hundred nineteen million, seventy-seven thousand, four hundred ninety-two".