1021355440352 has 96 divisors (see below), whose sum is σ = 2221045287552. Its totient is φ = 459382984704.

The previous prime is 1021355440319. The next prime is 1021355440363. The reversal of 1021355440352 is 2530445531201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4443518 + ... + 4667714.

It is an arithmetic number, because the mean of its divisors is an integer number (23135888412).

Almost surely, 2^{1021355440352} 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 1021355440352, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1110522643776).

1021355440352 is an abundant number, since it is smaller than the sum of its proper divisors (1199689847200).

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

1021355440352 is a wasteful number, since it uses less digits than its factorization.

1021355440352 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 224500 (or 224492 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 35.

The spelling of 1021355440352 in words is "one trillion, twenty-one billion, three hundred fifty-five million, four hundred forty thousand, three hundred fifty-two".