86943905620 has 144 divisors (see below), whose sum is σ = 216501707520. Its totient is φ = 29072908800.

The previous prime is 86943905567. The next prime is 86943905623. The reversal of 86943905620 is 2650934968.

It is a Harshad number since it is a multiple of its sum of digits (52).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86943905623) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 10071466 + ... + 10080094.

It is an arithmetic number, because the mean of its divisors is an integer number (1503484080).

Almost surely, 2^86943905620 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 86943905620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (108250853760).

86943905620 is an abundant number, since it is smaller than the sum of its proper divisors (129557801900).

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

86943905620 is a wasteful number, since it uses less digits than its factorization.

86943905620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8946 (or 8931 counting only the distinct ones).

The product of its (nonzero) digits is 2799360, while the sum is 52.

The spelling of 86943905620 in words is "eighty-six billion, nine hundred forty-three million, nine hundred five thousand, six hundred twenty".