1213557284088 has 48 divisors (see below), whose sum is σ = 3286768282200. Its totient is φ = 404512862400.

The previous prime is 1213557284083. The next prime is 1213557284131. The reversal of 1213557284088 is 8804827553121.

It is a happy number.

1213557284088 is a `hidden beast` number, since 1 + 2 + 1 + 3 + 557 + 2 + 8 + 4 + 0 + 88 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213557284083) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9148638 + ... + 9280338.

Almost surely, 2^{1213557284088} is an apocalyptic number.

1213557284088 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1213557284088 is an abundant number, since it is smaller than the sum of its proper divisors (2073210998112).

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

1213557284088 is a wasteful number, since it uses less digits than its factorization.

1213557284088 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 259692 (or 259685 counting only the distinct ones).

The product of its (nonzero) digits is 4300800, while the sum is 54.

The spelling of 1213557284088 in words is "one trillion, two hundred thirteen billion, five hundred fifty-seven million, two hundred eighty-four thousand, eighty-eight".