12500658608778 has 48 divisors (see below), whose sum is σ = 28553537469600. Its totient is φ = 3941586079200.

The previous prime is 12500658608773. The next prime is 12500658608813. The reversal of 12500658608778 is 87780685600521.

12500658608778 is a `hidden beast` number, since 1 + 2 + 500 + 6 + 58 + 6 + 0 + 8 + 7 + 78 = 666.

It is not an unprimeable number, because it can be changed into a prime (12500658608773) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 27507273 + ... + 27958028.

It is an arithmetic number, because the mean of its divisors is an integer number (594865363950).

Almost surely, 2^{12500658608778} is an apocalyptic number.

12500658608778 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

12500658608778 is an abundant number, since it is smaller than the sum of its proper divisors (16052878860822).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12500658608778 is a wasteful number, since it uses less digits than its factorization.

12500658608778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55465987 (or 55465984 counting only the distinct ones).

The product of its (nonzero) digits is 45158400, while the sum is 63.

The spelling of 12500658608778 in words is "twelve trillion, five hundred billion, six hundred fifty-eight million, six hundred eight thousand, seven hundred seventy-eight".