87021250512 has 120 divisors (see below), whose sum is σ = 261651083616. Its totient is φ = 24849586944.

The previous prime is 87021250499. The next prime is 87021250577. The reversal of 87021250512 is 21505212078.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4758378 + ... + 4776630.

Almost surely, 2^87021250512 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 87021250512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (130825541808).

87021250512 is an abundant number, since it is smaller than the sum of its proper divisors (174629833104).

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

87021250512 is a wasteful number, since it uses less digits than its factorization.

87021250512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20305 (or 20292 counting only the distinct ones).

The product of its (nonzero) digits is 11200, while the sum is 33.

The spelling of 87021250512 in words is "eighty-seven billion, twenty-one million, two hundred fifty thousand, five hundred twelve".