86731646400 has 504 divisors, whose sum is σ = 367797374640. Its totient is φ = 19823892480.

The previous prime is 86731646389. The next prime is 86731646411. The reversal of 86731646400 is 464613768.

It is a happy number.

86731646400 is a `hidden beast` number, since 86 + 7 + 3 + 164 + 6 + 400 = 666.

It is an interprime number because it is at equal distance from previous prime (86731646389) and next prime (86731646411).

It is a tau number, because it is divible by the number of its divisors (504).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 2096314 + ... + 2137286.

Almost surely, 2^86731646400 is an apocalyptic number.

86731646400 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 86731646400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (183898687320).

86731646400 is an abundant number, since it is smaller than the sum of its proper divisors (281065728240).

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

86731646400 is a wasteful number, since it uses less digits than its factorization.

86731646400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41018 (or 40990 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 45.

The spelling of 86731646400 in words is "eighty-six billion, seven hundred thirty-one million, six hundred forty-six thousand, four hundred".