129011798355 has 64 divisors (see below), whose sum is σ = 239071523328. Its totient is φ = 58713384960.

The previous prime is 129011798353. The next prime is 129011798417. The reversal of 129011798355 is 553897110921.

It is not a de Polignac number, because 129011798355 - 2¹ = 129011798353 is a prime.

It is a super-2 number, since 2×129011798355² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a junction number, because it is equal to n+sod(n) for n = 129011798298 and 129011798307.

It is not an unprimeable number, because it can be changed into a prime (129011798353) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 984612 + ... + 1107918.

It is an arithmetic number, because the mean of its divisors is an integer number (3735492552).

Almost surely, 2^129011798355 is an apocalyptic number.

129011798355 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

129011798355 is a deficient number, since it is larger than the sum of its proper divisors (110059724973).

129011798355 is a wasteful number, since it uses less digits than its factorization.

129011798355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123716.

The product of its (nonzero) digits is 680400, while the sum is 51.

The spelling of 129011798355 in words is "one hundred twenty-nine billion, eleven million, seven hundred ninety-eight thousand, three hundred fifty-five".