1330000421556 has 48 divisors (see below), whose sum is σ = 3142762872704. Its totient is φ = 437726370816.

The previous prime is 1330000421551. The next prime is 1330000421567. The reversal of 1330000421556 is 6551240000331.

It is a super-2 number, since 2×1330000421556² (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 (1330000421551) 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, 1179985 + ... + 2013048.

Almost surely, 2^{1330000421556} is an apocalyptic number.

It is an amenable number.

1330000421556 is an abundant number, since it is smaller than the sum of its proper divisors (1812762451148).

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

1330000421556 is a wasteful number, since it uses less digits than its factorization.

1330000421556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3193480 (or 3193478 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 30.

Adding to 1330000421556 its reverse (6551240000331), we get a palindrome (7881240421887).

The spelling of 1330000421556 in words is "one trillion, three hundred thirty billion, four hundred twenty-one thousand, five hundred fifty-six".