1018778084544 has 224 divisors, whose sum is σ = 3073153559040. Its totient is φ = 294841958400.

The previous prime is 1018778084539. The next prime is 1018778084563. The reversal of 1018778084544 is 4454808778101.

It is a happy number.

It is a super-2 number, since 2×1018778084544² (a number of 25 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (57) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 32092872 + ... + 32124600.

Almost surely, 2^{1018778084544} 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 1018778084544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1536576779520).

1018778084544 is an abundant number, since it is smaller than the sum of its proper divisors (2054375474496).

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

1018778084544 is a wasteful number, since it uses less digits than its factorization.

1018778084544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32439 (or 32429 counting only the distinct ones).

The product of its (nonzero) digits is 8028160, while the sum is 57.

The spelling of 1018778084544 in words is "one trillion, eighteen billion, seven hundred seventy-eight million, eighty-four thousand, five hundred forty-four".