86169440784 has 60 divisors (see below), whose sum is σ = 258947969424. Its totient is φ = 24619839552.

The previous prime is 86169440771. The next prime is 86169440809. The reversal of 86169440784 is 48704496168.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18315982 + ... + 18320685.

Almost surely, 2^86169440784 is an apocalyptic number.

86169440784 is a gapful number since it is divisible by the number (84) formed by its first and last digit.

It is an amenable number.

86169440784 is an abundant number, since it is smaller than the sum of its proper divisors (172778528640).

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

86169440784 is a wasteful number, since it uses less digits than its factorization.

86169440784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36636692 (or 36636679 counting only the distinct ones).

The product of its (nonzero) digits is 9289728, while the sum is 57.

The spelling of 86169440784 in words is "eighty-six billion, one hundred sixty-nine million, four hundred forty thousand, seven hundred eighty-four".