86554543640 has 32 divisors (see below), whose sum is σ = 197415506880. Its totient is φ = 34147544832.

The previous prime is 86554543639. The next prime is 86554543661. The reversal of 86554543640 is 4634545568.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14818064 + ... + 14823903.

It is an arithmetic number, because the mean of its divisors is an integer number (6169234590).

Almost surely, 2^86554543640 is an apocalyptic number.

It is an amenable number.

86554543640 is an abundant number, since it is smaller than the sum of its proper divisors (110860963240).

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

86554543640 is a wasteful number, since it uses less digits than its factorization.

86554543640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29642051 (or 29642047 counting only the distinct ones).

The product of its (nonzero) digits is 6912000, while the sum is 50.

The spelling of 86554543640 in words is "eighty-six billion, five hundred fifty-four million, five hundred forty-three thousand, six hundred forty".