86494796640 has 144 divisors (see below), whose sum is σ = 337329746208. Its totient is φ = 19770236928.

The previous prime is 86494796603. The next prime is 86494796669. The reversal of 86494796640 is 4669749468.

86494796640 is a `hidden beast` number, since 8 + 64 + 9 + 479 + 66 + 40 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is a Smith number, since the sum of its digits (63) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4280337 + ... + 4300496.

It is an arithmetic number, because the mean of its divisors is an integer number (2342567682).

Almost surely, 2^86494796640 is an apocalyptic number.

86494796640 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

86494796640 is an abundant number, since it is smaller than the sum of its proper divisors (250834949568).

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

86494796640 is a wasteful number, since it uses less digits than its factorization.

86494796640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8580861 (or 8580850 counting only the distinct ones).

The product of its (nonzero) digits is 62705664, while the sum is 63.

The spelling of 86494796640 in words is "eighty-six billion, four hundred ninety-four million, seven hundred ninety-six thousand, six hundred forty".