86212615580 has 144 divisors (see below), whose sum is σ = 225487563840. Its totient is φ = 27109914624.

The previous prime is 86212615499. The next prime is 86212615589. The reversal of 86212615580 is 8551621268.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86212615589) 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, 3703016 + ... + 3726224.

It is an arithmetic number, because the mean of its divisors is an integer number (1565885860).

Almost surely, 2^86212615580 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 86212615580, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (112743781920).

86212615580 is an abundant number, since it is smaller than the sum of its proper divisors (139274948260).

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

86212615580 is a wasteful number, since it uses less digits than its factorization.

86212615580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23408 (or 23393 counting only the distinct ones).

The product of its (nonzero) digits is 230400, while the sum is 44.

The spelling of 86212615580 in words is "eighty-six billion, two hundred twelve million, six hundred fifteen thousand, five hundred eighty".