129336551950 has 48 divisors (see below), whose sum is σ = 242308710000. Its totient is φ = 51360215040.

The previous prime is 129336551933. The next prime is 129336551963. The reversal of 129336551950 is 59155633921.

It is a junction number, because it is equal to n+sod(n) for n = 129336551894 and 129336551903.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19806286 + ... + 19812814.

It is an arithmetic number, because the mean of its divisors is an integer number (5048098125).

Almost surely, 2^129336551950 is an apocalyptic number.

129336551950 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

129336551950 is a deficient number, since it is larger than the sum of its proper divisors (112972158050).

129336551950 is a wasteful number, since it uses less digits than its factorization.

129336551950 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9349 (or 9344 counting only the distinct ones).

The product of its (nonzero) digits is 1093500, while the sum is 49.

The spelling of 129336551950 in words is "one hundred twenty-nine billion, three hundred thirty-six million, five hundred fifty-one thousand, nine hundred fifty".