129198327783 has 48 divisors (see below), whose sum is σ = 207766324224. Its totient is φ = 71130769920.

The previous prime is 129198327781. The next prime is 129198327799. The reversal of 129198327783 is 387723891921.

It is not a de Polignac number, because 129198327783 - 2¹ = 129198327781 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129198327781) 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 47 ways as a sum of consecutive naturals, for example, 971991 + ... + 1096887.

It is an arithmetic number, because the mean of its divisors is an integer number (4328465088).

Almost surely, 2^129198327783 is an apocalyptic number.

129198327783 is a deficient number, since it is larger than the sum of its proper divisors (78567996441).

129198327783 is a wasteful number, since it uses less digits than its factorization.

129198327783 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125172 (or 125165 counting only the distinct ones).

The product of its digits is 9144576, while the sum is 60.

The spelling of 129198327783 in words is "one hundred twenty-nine billion, one hundred ninety-eight million, three hundred twenty-seven thousand, seven hundred eighty-three".