86430447840 has 96 divisors (see below), whose sum is σ = 297006466176. Its totient is φ = 20952834560.

The previous prime is 86430447839. The next prime is 86430447871. The reversal of 86430447840 is 4874403468.

It is a tau number, because it is divible by the number of its divisors (96).

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 86430447840.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8179422 + ... + 8189981.

It is an arithmetic number, because the mean of its divisors is an integer number (3093817356).

Almost surely, 2^86430447840 is an apocalyptic number.

86430447840 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

86430447840 is an abundant number, since it is smaller than the sum of its proper divisors (210576018336).

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

86430447840 is a wasteful number, since it uses less digits than its factorization.

86430447840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16369432 (or 16369424 counting only the distinct ones).

The product of its (nonzero) digits is 2064384, while the sum is 48.

The spelling of 86430447840 in words is "eighty-six billion, four hundred thirty million, four hundred forty-seven thousand, eight hundred forty".