1284203023978 has 16 divisors (see below), whose sum is σ = 2297207894400. Its totient is φ = 526443475536.

The previous prime is 1284203023951. The next prime is 1284203023993. The reversal of 1284203023978 is 8793203024821.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1994103753 + ... + 1994104396.

It is an arithmetic number, because the mean of its divisors is an integer number (143575493400).

Almost surely, 2^{1284203023978} is an apocalyptic number.

1284203023978 is a deficient number, since it is larger than the sum of its proper divisors (1013004870422).

1284203023978 is a wasteful number, since it uses less digits than its factorization.

1284203023978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3988208181.

The product of its (nonzero) digits is 1161216, while the sum is 49.

The spelling of 1284203023978 in words is "one trillion, two hundred eighty-four billion, two hundred three million, twenty-three thousand, nine hundred seventy-eight".