129305976616 has 16 divisors (see below), whose sum is σ = 250269632640. Its totient is φ = 62567407920.

The previous prime is 129305976607. The next prime is 129305976659. The reversal of 129305976616 is 616679503921.

It is a super-2 number, since 2×129305976616² (a number of 23 digits) contains 22 as substring.

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, 260697286 + ... + 260697781.

It is an arithmetic number, because the mean of its divisors is an integer number (15641852040).

Almost surely, 2^129305976616 is an apocalyptic number.

It is an amenable number.

129305976616 is a deficient number, since it is larger than the sum of its proper divisors (120963656024).

129305976616 is a wasteful number, since it uses less digits than its factorization.

129305976616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 521395104 (or 521395100 counting only the distinct ones).

The product of its (nonzero) digits is 3674160, while the sum is 55.

The spelling of 129305976616 in words is "one hundred twenty-nine billion, three hundred five million, nine hundred seventy-six thousand, six hundred sixteen".