1187689842432 has 216 divisors, whose sum is σ = 3480958572000. Its totient is φ = 389410136064.

The previous prime is 1187689842431. The next prime is 1187689842439. The reversal of 1187689842432 is 2342489867811.

It is a happy number.

1187689842432 is a `hidden beast` number, since 1 + 1 + 8 + 76 + 8 + 98 + 42 + 432 = 666.

It is a super-2 number, since 2×1187689842432² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1187689842432.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1187689842431) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 35342694 + ... + 35376282.

Almost surely, 2^{1187689842432} is an apocalyptic number.

1187689842432 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1187689842432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1740479286000).

1187689842432 is an abundant number, since it is smaller than the sum of its proper divisors (2293268729568).

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

1187689842432 is a wasteful number, since it uses less digits than its factorization.

1187689842432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33863 (or 33846 counting only the distinct ones).

The product of its digits is 37158912, while the sum is 63.

The spelling of 1187689842432 in words is "one trillion, one hundred eighty-seven billion, six hundred eighty-nine million, eight hundred forty-two thousand, four hundred thirty-two".