1066252553604 has 288 divisors, whose sum is σ = 3228886752000. Its totient is φ = 296375708160.

The previous prime is 1066252553603. The next prime is 1066252553609. The reversal of 1066252553604 is 4063552526601.

1066252553604 is a `hidden beast` number, since 1 + 0 + 6 + 62 + 52 + 5 + 536 + 0 + 4 = 666.

It is a super-2 number, since 2×1066252553604² (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 1066252553604.

It is not an unprimeable number, because it can be changed into a prime (1066252553603) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 191872794 + ... + 191878350.

Almost surely, 2^{1066252553604} is an apocalyptic number.

1066252553604 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 1066252553604, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1614443376000).

1066252553604 is an abundant number, since it is smaller than the sum of its proper divisors (2162634198396).

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

1066252553604 is a wasteful number, since it uses less digits than its factorization.

1066252553604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6008 (or 5989 counting only the distinct ones).

The product of its (nonzero) digits is 1296000, while the sum is 45.

The spelling of 1066252553604 in words is "one trillion, sixty-six billion, two hundred fifty-two million, five hundred fifty-three thousand, six hundred four".