12803949172578 has 64 divisors (see below), whose sum is σ = 27085009674240. Its totient is φ = 4026946891968.

The previous prime is 12803949172577. The next prime is 12803949172591. The reversal of 12803949172578 is 87527194930821.

It is a super-3 number, since 3×12803949172578³ (a number of 40 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12803949172571) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11036400 + ... + 12141252.

It is an arithmetic number, because the mean of its divisors is an integer number (423203276160).

Almost surely, 2^{12803949172578} is an apocalyptic number.

12803949172578 is an abundant number, since it is smaller than the sum of its proper divisors (14281060501662).

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

12803949172578 is a wasteful number, since it uses less digits than its factorization.

12803949172578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1106023.

The product of its (nonzero) digits is 60963840, while the sum is 66.

The spelling of 12803949172578 in words is "twelve trillion, eight hundred three billion, nine hundred forty-nine million, one hundred seventy-two thousand, five hundred seventy-eight".