1056520378650 has 96 divisors (see below), whose sum is σ = 2865191616000. Its totient is φ = 255514705600.

The previous prime is 1056520378621. The next prime is 1056520378663. The reversal of 1056520378650 is 568730256501.

It is a super-2 number, since 2×1056520378650² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1056520378650.

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 47 ways as a sum of consecutive naturals, for example, 72750 + ... + 1455449.

It is an arithmetic number, because the mean of its divisors is an integer number (29845746000).

Almost surely, 2^{1056520378650} is an apocalyptic number.

1056520378650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1056520378650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1432595808000).

1056520378650 is an abundant number, since it is smaller than the sum of its proper divisors (1808671237350).

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

1056520378650 is a wasteful number, since it uses less digits than its factorization.

1056520378650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1528644 (or 1528639 counting only the distinct ones).

The product of its (nonzero) digits is 1512000, while the sum is 48.

The spelling of 1056520378650 in words is "one trillion, fifty-six billion, five hundred twenty million, three hundred seventy-eight thousand, six hundred fifty".