129293204128048 has 80 divisors (see below), whose sum is σ = 257740015805440. Its totient is φ = 62806269639168.

The previous prime is 129293204128019. The next prime is 129293204128057. The reversal of 129293204128048 is 840821402392921.

It is a self number, because there is not a number n which added to its sum of digits gives 129293204128048.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2883476413 + ... + 2883521251.

It is an arithmetic number, because the mean of its divisors is an integer number (3221750197568).

Almost surely, 2^{129293204128048} is an apocalyptic number.

It is an amenable number.

129293204128048 is a deficient number, since it is larger than the sum of its proper divisors (128446811677392).

129293204128048 is a wasteful number, since it uses less digits than its factorization.

129293204128048 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81834 (or 81828 counting only the distinct ones).

The product of its (nonzero) digits is 3981312, while the sum is 55.

The spelling of 129293204128048 in words is "one hundred twenty-nine trillion, two hundred ninety-three billion, two hundred four million, one hundred twenty-eight thousand, forty-eight".