1213554504432 has 80 divisors (see below), whose sum is σ = 3211822242720. Its totient is φ = 394609766400.

The previous prime is 1213554504431. The next prime is 1213554504457. The reversal of 1213554504432 is 2344054553121.

It is a super-3 number, since 3×1213554504432³ (a number of 37 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213554504431) 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, 22252494 + ... + 22306962.

It is an arithmetic number, because the mean of its divisors is an integer number (40147778034).

Almost surely, 2^{1213554504432} is an apocalyptic number.

1213554504432 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1213554504432 is an abundant number, since it is smaller than the sum of its proper divisors (1998267738288).

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

1213554504432 is a wasteful number, since it uses less digits than its factorization.

1213554504432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65842 (or 65836 counting only the distinct ones).

The product of its (nonzero) digits is 288000, while the sum is 39.

The spelling of 1213554504432 in words is "one trillion, two hundred thirteen billion, five hundred fifty-four million, five hundred four thousand, four hundred thirty-two".