1066421425630 has 32 divisors (see below), whose sum is σ = 2094138072288. Its totient is φ = 387775872000.

The previous prime is 1066421425571. The next prime is 1066421425631. The reversal of 1066421425630 is 365241246601.

It is a super-2 number, since 2×1066421425630² (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 (1066421425631) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3257430 + ... + 3569830.

It is an arithmetic number, because the mean of its divisors is an integer number (65441814759).

Almost surely, 2^{1066421425630} is an apocalyptic number.

1066421425630 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1066421425630 is a deficient number, since it is larger than the sum of its proper divisors (1027716646658).

1066421425630 is a wasteful number, since it uses less digits than its factorization.

1066421425630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 343452.

The product of its (nonzero) digits is 207360, while the sum is 40.

The spelling of 1066421425630 in words is "one trillion, sixty-six billion, four hundred twenty-one million, four hundred twenty-five thousand, six hundred thirty".