1345988181888 has 224 divisors, whose sum is σ = 4594690355760. Its totient is φ = 384567865344.

The previous prime is 1345988181841. The next prime is 1345988181931. The reversal of 1345988181888 is 8881818895431.

1345988181888 is a `hidden beast` number, since 1 + 3 + 4 + 598 + 8 + 18 + 18 + 8 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (224).

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 377145 + ... + 1683512.

Almost surely, 2^{1345988181888} is an apocalyptic number.

1345988181888 is a gapful number since it is divisible by the number (18) 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 1345988181888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2297345177880).

1345988181888 is an abundant number, since it is smaller than the sum of its proper divisors (3248702173872).

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

1345988181888 is an frugal number, since it uses more digits than its factorization.

1345988181888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2060696 (or 2060669 counting only the distinct ones).

The product of its digits is 141557760, while the sum is 72.

The spelling of 1345988181888 in words is "one trillion, three hundred forty-five billion, nine hundred eighty-eight million, one hundred eighty-one thousand, eight hundred eighty-eight".