1063944801528 has 128 divisors (see below), whose sum is σ = 3119195520000. Its totient is φ = 296073722880.

The previous prime is 1063944801527. The next prime is 1063944801587. The reversal of 1063944801528 is 8251084493601.

It is a Cunningham number, because it is equal to 1031477²-1.

It is a super-2 number, since 2×1063944801528² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1063944801527) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3996978 + ... + 4254846.

It is an arithmetic number, because the mean of its divisors is an integer number (24368715000).

Almost surely, 2^{1063944801528} 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 1063944801528, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1559597760000).

1063944801528 is an abundant number, since it is smaller than the sum of its proper divisors (2055250718472).

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

1063944801528 is a wasteful number, since it uses less digits than its factorization.

1063944801528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258525 (or 258521 counting only the distinct ones).

The product of its (nonzero) digits is 1658880, while the sum is 51.

The spelling of 1063944801528 in words is "one trillion, sixty-three billion, nine hundred forty-four million, eight hundred one thousand, five hundred twenty-eight".