1020650204784 has 120 divisors (see below), whose sum is σ = 3067873881600. Its totient is φ = 291546283392.

The previous prime is 1020650204737. The next prime is 1020650204809. The reversal of 1020650204784 is 4874020560201.

It is a super-2 number, since 2×1020650204784² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10495617 + ... + 10592415.

It is an arithmetic number, because the mean of its divisors is an integer number (25565615680).

Almost surely, 2^{1020650204784} is an apocalyptic number.

1020650204784 is a gapful number since it is divisible by the number (14) 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 1020650204784, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1533936940800).

1020650204784 is an abundant number, since it is smaller than the sum of its proper divisors (2047223676816).

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

1020650204784 is a wasteful number, since it uses less digits than its factorization.

1020650204784 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101307 (or 101294 counting only the distinct ones).

The product of its (nonzero) digits is 107520, while the sum is 39.

Adding to 1020650204784 its reverse (4874020560201), we get a palindrome (5894670764985).

The spelling of 1020650204784 in words is "one trillion, twenty billion, six hundred fifty million, two hundred four thousand, seven hundred eighty-four".