1084807878464 has 56 divisors (see below), whose sum is σ = 2183002950216. Its totient is φ = 534804480000.

The previous prime is 1084807878457. The next prime is 1084807878491. The reversal of 1084807878464 is 4648787084801.

1084807878464 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 785336260864 + 299471617600 = 886192^2 + 547240^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1084807878464.

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, 1209644 + ... + 1906004.

Almost surely, 2^{1084807878464} 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 1084807878464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1091501475108).

1084807878464 is an abundant number, since it is smaller than the sum of its proper divisors (1098195071752).

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

1084807878464 is a wasteful number, since it uses less digits than its factorization.

1084807878464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 696715 (or 696705 counting only the distinct ones).

The product of its (nonzero) digits is 77070336, while the sum is 65.

The spelling of 1084807878464 in words is "one trillion, eighty-four billion, eight hundred seven million, eight hundred seventy-eight thousand, four hundred sixty-four".