129958728544 has 24 divisors (see below), whose sum is σ = 255883242888. Its totient is φ = 64972508160.

The previous prime is 129958728541. The next prime is 129958728629. The reversal of 129958728544 is 445827859921.

It is a super-2 number, since 2×129958728544² (a number of 23 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (64) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129958728541) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 100899 + ... + 519709.

It is an arithmetic number, because the mean of its divisors is an integer number (10661801787).

Almost surely, 2^129958728544 is an apocalyptic number.

It is an amenable number.

129958728544 is a deficient number, since it is larger than the sum of its proper divisors (125924514344).

129958728544 is an equidigital number, since it uses as much as digits as its factorization.

129958728544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 428518 (or 428510 counting only the distinct ones).

The product of its digits is 58060800, while the sum is 64.

The spelling of 129958728544 in words is "one hundred twenty-nine billion, nine hundred fifty-eight million, seven hundred twenty-eight thousand, five hundred forty-four".