864540687750 has 64 divisors (see below), whose sum is σ = 2158420193280. Its totient is φ = 230487919200.

The previous prime is 864540687749. The next prime is 864540687767. The reversal of 864540687750 is 57786045468.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2980669 + ... + 3257831.

It is an arithmetic number, because the mean of its divisors is an integer number (33725315520).

Almost surely, 2^864540687750 is an apocalyptic number.

864540687750 is an abundant number, since it is smaller than the sum of its proper divisors (1293879505530).

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

864540687750 is a wasteful number, since it uses less digits than its factorization.

864540687750 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 281342 (or 281332 counting only the distinct ones).

The product of its (nonzero) digits is 45158400, while the sum is 60.

The spelling of 864540687750 in words is "eight hundred sixty-four billion, five hundred forty million, six hundred eighty-seven thousand, seven hundred fifty".