86637533520 has 160 divisors (see below), whose sum is σ = 276019083648. Its totient is φ = 22463944704.

The previous prime is 86637533503. The next prime is 86637533527. The reversal of 86637533520 is 2533573668.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a self number, because there is not a number n which added to its sum of digits gives 86637533520.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86637533527) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 20839282 + ... + 20843438.

Almost surely, 2^86637533520 is an apocalyptic number.

86637533520 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 86637533520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (138009541824).

86637533520 is an abundant number, since it is smaller than the sum of its proper divisors (189381550128).

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

86637533520 is a wasteful number, since it uses less digits than its factorization.

86637533520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6557 (or 6551 counting only the distinct ones).

The product of its (nonzero) digits is 2721600, while the sum is 48.

The spelling of 86637533520 in words is "eighty-six billion, six hundred thirty-seven million, five hundred thirty-three thousand, five hundred twenty".