1232200487538 has 20 divisors (see below), whose sum is σ = 2761041833550. Its totient is φ = 410733495792.

The previous prime is 1232200487537. The next prime is 1232200487569. The reversal of 1232200487538 is 8357840022321.

1232200487538 is a `hidden beast` number, since 1 + 2 + 32 + 2 + 0 + 0 + 4 + 87 + 538 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1230096155409 + 2104332129 = 1109097^2 + 45873^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1232200487493 and 1232200487502.

It is not an unprimeable number, because it can be changed into a prime (1232200487537) by changing a digit.

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 9 ways as a sum of consecutive naturals, for example, 3803087763 + ... + 3803088086.

Almost surely, 2^{1232200487538} is an apocalyptic number.

1232200487538 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1232200487538 is an abundant number, since it is smaller than the sum of its proper divisors (1528841346012).

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

1232200487538 is an equidigital number, since it uses as much as digits as its factorization.

1232200487538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7606175863 (or 7606175854 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 45.

The spelling of 1232200487538 in words is "one trillion, two hundred thirty-two billion, two hundred million, four hundred eighty-seven thousand, five hundred thirty-eight".