1021554841852 has 24 divisors (see below), whose sum is σ = 1882238979600. Its totient is φ = 483784488576.

The previous prime is 1021554841823. The next prime is 1021554841889. The reversal of 1021554841852 is 2581484551201.

It is a super-2 number, since 2×1021554841852² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1189243 + ... + 1859410.

It is an arithmetic number, because the mean of its divisors is an integer number (78426624150).

Almost surely, 2^{1021554841852} is an apocalyptic number.

It is an amenable number.

1021554841852 is a deficient number, since it is larger than the sum of its proper divisors (860684137748).

1021554841852 is a wasteful number, since it uses less digits than its factorization.

1021554841852 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3053085 (or 3053083 counting only the distinct ones).

The product of its (nonzero) digits is 512000, while the sum is 46.

The spelling of 1021554841852 in words is "one trillion, twenty-one billion, five hundred fifty-four million, eight hundred forty-one thousand, eight hundred fifty-two".