12878209554 has 16 divisors (see below), whose sum is σ = 29435907648. Its totient is φ = 3679488432.

The previous prime is 12878209541. The next prime is 12878209577. The reversal of 12878209554 is 45590287821.

It is a junction number, because it is equal to n+sod(n) for n = 12878209497 and 12878209506.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 153311977 + ... + 153312060.

It is an arithmetic number, because the mean of its divisors is an integer number (1839744228).

Almost surely, 2^12878209554 is an apocalyptic number.

12878209554 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

12878209554 is an abundant number, since it is smaller than the sum of its proper divisors (16557698094).

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

12878209554 is a wasteful number, since it uses less digits than its factorization.

12878209554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 306624049.

The product of its (nonzero) digits is 1612800, while the sum is 51.

The spelling of 12878209554 in words is "twelve billion, eight hundred seventy-eight million, two hundred nine thousand, five hundred fifty-four".