1018452021240 has 256 divisors, whose sum is σ = 3258923673600. Its totient is φ = 253880123904.

The previous prime is 1018452021233. The next prime is 1018452021283. The reversal of 1018452021240 is 421202548101.

It is a super-2 number, since 2×1018452021240² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 1018452021198 and 1018452021207.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 179207439 + ... + 179213121.

It is an arithmetic number, because the mean of its divisors is an integer number (12730170600).

Almost surely, 2^{1018452021240} is an apocalyptic number.

1018452021240 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 1018452021240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1629461836800).

1018452021240 is an abundant number, since it is smaller than the sum of its proper divisors (2240471652360).

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

1018452021240 is a wasteful number, since it uses less digits than its factorization.

1018452021240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6746 (or 6742 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 30.

Adding to 1018452021240 its reverse (421202548101), we get a palindrome (1439654569341).

The spelling of 1018452021240 in words is "one trillion, eighteen billion, four hundred fifty-two million, twenty-one thousand, two hundred forty".