1285693553948 has 24 divisors (see below), whose sum is σ = 2272381295184. Its totient is φ = 636442544000.

The previous prime is 1285693553923. The next prime is 1285693553993. The reversal of 1285693553948 is 8493553965821.

It is a happy number.

It is a congruent number.

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, 7080128 + ... + 7259448.

It is an arithmetic number, because the mean of its divisors is an integer number (94682553966).

Almost surely, 2^{1285693553948} is an apocalyptic number.

It is an amenable number.

1285693553948 is a deficient number, since it is larger than the sum of its proper divisors (986687741236).

1285693553948 is a wasteful number, since it uses less digits than its factorization.

1285693553948 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197173 (or 197171 counting only the distinct ones).

The product of its digits is 279936000, while the sum is 68.

The spelling of 1285693553948 in words is "one trillion, two hundred eighty-five billion, six hundred ninety-three million, five hundred fifty-three thousand, nine hundred forty-eight".