1011804800864 has 576 divisors, whose sum is σ = 2601030942720. Its totient is φ = 382516992000.

The previous prime is 1011804800813. The next prime is 1011804800879. The reversal of 1011804800864 is 4680084081101.

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 95 ways as a sum of consecutive naturals, for example, 2347574729 + ... + 2347575159.

It is an arithmetic number, because the mean of its divisors is an integer number (4515678720).

Almost surely, 2^{1011804800864} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1011804800864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1300515471360).

1011804800864 is an abundant number, since it is smaller than the sum of its proper divisors (1589226141856).

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

1011804800864 is a wasteful number, since it uses less digits than its factorization.

1011804800864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 595 (or 574 counting only the distinct ones).

The product of its (nonzero) digits is 49152, while the sum is 41.

Adding to 1011804800864 its reverse (4680084081101), we get a palindrome (5691888881965).

The spelling of 1011804800864 in words is "one trillion, eleven billion, eight hundred four million, eight hundred thousand, eight hundred sixty-four".