12928947723550 has 12 divisors (see below), whose sum is σ = 24047842765896. Its totient is φ = 5171579089400.

The previous prime is 12928947723479. The next prime is 12928947723553. The reversal of 12928947723550 is 5532774982921.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12928947723553) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 129289477186 + ... + 129289477285.

It is an arithmetic number, because the mean of its divisors is an integer number (2003986897158).

Almost surely, 2^{12928947723550} is an apocalyptic number.

12928947723550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12928947723550 is a deficient number, since it is larger than the sum of its proper divisors (11118895042346).

12928947723550 is a wasteful number, since it uses less digits than its factorization.

12928947723550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258578954483 (or 258578954478 counting only the distinct ones).

The product of its (nonzero) digits is 76204800, while the sum is 64.

The spelling of 12928947723550 in words is "twelve trillion, nine hundred twenty-eight billion, nine hundred forty-seven million, seven hundred twenty-three thousand, five hundred fifty".