1201358359920 has 80 divisors (see below), whose sum is σ = 3724720165152. Its totient is φ = 320318423040.

The previous prime is 1201358359909. The next prime is 1201358359963. The reversal of 1201358359920 is 299538531021.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a self number, because there is not a number n which added to its sum of digits gives 1201358359920.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1435780 + ... + 2112860.

Almost surely, 2^{1201358359920} is an apocalyptic number.

1201358359920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1201358359920 is an abundant number, since it is smaller than the sum of its proper divisors (2523361805232).

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

1201358359920 is a wasteful number, since it uses less digits than its factorization.

1201358359920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 684490 (or 684484 counting only the distinct ones).

The product of its (nonzero) digits is 583200, while the sum is 48.

The spelling of 1201358359920 in words is "one trillion, two hundred one billion, three hundred fifty-eight million, three hundred fifty-nine thousand, nine hundred twenty".