86749964775 has 18 divisors (see below), whose sum is σ = 155378826200. Its totient is φ = 46266647760.

The previous prime is 86749964771. The next prime is 86749964797. The reversal of 86749964775 is 57746994768.

86749964775 is a `hidden beast` number, since 8 + 6 + 7 + 499 + 64 + 7 + 75 = 666.

It is not a de Polignac number, because 86749964775 - 2² = 86749964771 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86749964771) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 192777475 + ... + 192777924.

Almost surely, 2^86749964775 is an apocalyptic number.

86749964775 is a deficient number, since it is larger than the sum of its proper divisors (68628861425).

86749964775 is a wasteful number, since it uses less digits than its factorization.

86749964775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 385555415 (or 385555407 counting only the distinct ones).

The product of its digits is 640120320, while the sum is 72.

The spelling of 86749964775 in words is "eighty-six billion, seven hundred forty-nine million, nine hundred sixty-four thousand, seven hundred seventy-five".