129877241643 has 64 divisors (see below), whose sum is σ = 206990080000. Its totient is φ = 80243654400.

The previous prime is 129877241623. The next prime is 129877241647. The reversal of 129877241643 is 346142778921.

129877241643 is a `hidden beast` number, since 1 + 298 + 77 + 241 + 6 + 43 = 666.

It is not a de Polignac number, because 129877241643 - 2³⁰ = 128803499819 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 129877241643.

It is not an unprimeable number, because it can be changed into a prime (129877241647) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4402743 + ... + 4432143.

It is an arithmetic number, because the mean of its divisors is an integer number (3234220000).

Almost surely, 2^129877241643 is an apocalyptic number.

129877241643 is a deficient number, since it is larger than the sum of its proper divisors (77112838357).

129877241643 is a wasteful number, since it uses less digits than its factorization.

129877241643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29617 (or 29611 counting only the distinct ones).

The product of its digits is 4064256, while the sum is 54.

The spelling of 129877241643 in words is "one hundred twenty-nine billion, eight hundred seventy-seven million, two hundred forty-one thousand, six hundred forty-three".