87489273453120 has 2016 divisors, whose sum is σ = 391156513413120. Its totient is φ = 17550861926400.

The previous prime is 87489273453073. The next prime is 87489273453133. The reversal of 87489273453120 is 2135437298478.

It is a happy number.

87489273453120 is a `hidden beast` number, since 8 + 7 + 4 + 8 + 9 + 2 + 73 + 4 + 531 + 20 = 666.

It is a tau number, because it is divible by the number of its divisors (2016).

It is a Harshad number since it is a multiple of its sum of digits (63).

It is an unprimeable number.

It is a polite number, since it can be written in 287 ways as a sum of consecutive naturals, for example, 38490660304 + ... + 38490662576.

It is an arithmetic number, because the mean of its divisors is an integer number (194026048320).

Almost surely, 2^{87489273453120} is an apocalyptic number.

87489273453120 is a gapful number since it is divisible by the number (80) 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 87489273453120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (195578256706560).

87489273453120 is an abundant number, since it is smaller than the sum of its proper divisors (303667239960000).

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

87489273453120 is a wasteful number, since it uses less digits than its factorization.

87489273453120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2865 (or 2841 counting only the distinct ones).

The product of its (nonzero) digits is 81285120, while the sum is 63.

The spelling of 87489273453120 in words is "eighty-seven trillion, four hundred eighty-nine billion, two hundred seventy-three million, four hundred fifty-three thousand, one hundred twenty".