129796217632 has 24 divisors (see below), whose sum is σ = 255770594352. Its totient is φ = 64838606400.

The previous prime is 129796217609. The next prime is 129796217651. The reversal of 129796217632 is 236712697921.

It is a super-2 number, since 2×129796217632² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1823994 + ... + 1893817.

It is an arithmetic number, because the mean of its divisors is an integer number (10657108098).

Almost surely, 2^129796217632 is an apocalyptic number.

It is an amenable number.

129796217632 is a deficient number, since it is larger than the sum of its proper divisors (125974376720).

129796217632 is a wasteful number, since it uses less digits than its factorization.

129796217632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3718912 (or 3718904 counting only the distinct ones).

The product of its digits is 3429216, while the sum is 55.

The spelling of 129796217632 in words is "one hundred twenty-nine billion, seven hundred ninety-six million, two hundred seventeen thousand, six hundred thirty-two".