1000778659608 has 1024 divisors, whose sum is σ = 3504291840000. Its totient is φ = 230756843520.

The previous prime is 1000778659603. The next prime is 1000778659663. The reversal of 1000778659608 is 8069568770001.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1000778659603) by changing a digit.

It is a polite number, since it can be written in 255 ways as a sum of consecutive naturals, for example, 5185381560 + ... + 5185381752.

It is an arithmetic number, because the mean of its divisors is an integer number (3422160000).

Almost surely, 2^{1000778659608} 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 1000778659608, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1752145920000).

1000778659608 is an abundant number, since it is smaller than the sum of its proper divisors (2503513180392).

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

1000778659608 is a wasteful number, since it uses less digits than its factorization.

1000778659608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 440 (or 436 counting only the distinct ones).

The product of its (nonzero) digits is 5080320, while the sum is 57.

The spelling of 1000778659608 in words is "one trillion, seven hundred seventy-eight million, six hundred fifty-nine thousand, six hundred eight".