1018326608640 has 864 divisors, whose sum is σ = 4114967980032. Its totient is φ = 238878720000.

The previous prime is 1018326608639. The next prime is 1018326608653. The reversal of 1018326608640 is 468066238101.

1018326608640 is a `hidden beast` number, since 1 + 0 + 1 + 8 + 32 + 6 + 608 + 6 + 4 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (864).

It is a Harshad number since it is a multiple of its sum of digits (45).

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, 106059840 + ... + 106069440.

Almost surely, 2^{1018326608640} is an apocalyptic number.

1018326608640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1018326608640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2057483990016).

1018326608640 is an abundant number, since it is smaller than the sum of its proper divisors (3096641371392).

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

1018326608640 is an equidigital number, since it uses as much as digits as its factorization.

1018326608640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9679 (or 9653 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 45.

The spelling of 1018326608640 in words is "one trillion, eighteen billion, three hundred twenty-six million, six hundred eight thousand, six hundred forty".