12285978378496 has 27 divisors (see below), whose sum is σ = 24524076599743. Its totient is φ = 6142961148160.

The previous prime is 12285978378467. The next prime is 12285978378529. The reversal of 12285978378496 is 69487387958221.

The square root of 12285978378496 is 3505136.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 55972641 + ... + 56191711.

Almost surely, 2^{12285978378496} is an apocalyptic number.

12285978378496 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

12285978378496 is the 3505136-th square number.

It is an amenable number.

12285978378496 is a deficient number, since it is larger than the sum of its proper divisors (12238098221247).

12285978378496 is an frugal number, since it uses more digits than its factorization.

12285978378496 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 438158 (or 219073 counting only the distinct ones).

The product of its digits is 2926264320, while the sum is 79.

The spelling of 12285978378496 in words is "twelve trillion, two hundred eighty-five billion, nine hundred seventy-eight million, three hundred seventy-eight thousand, four hundred ninety-six".