78284286775 has 12 divisors (see below), whose sum is σ = 97164910264. Its totient is φ = 62567820000.

The previous prime is 78284286749. The next prime is 78284286793. The reversal of 78284286775 is 57768248287.

It is not a de Polignac number, because 78284286775 - 2¹⁵ = 78284254007 is a prime.

It is a super-2 number, since 2×78284286775² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent 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, 1463436 + ... + 1515985.

Almost surely, 2^78284286775 is an apocalyptic number.

78284286775 is a deficient number, since it is larger than the sum of its proper divisors (18880623489).

78284286775 is a wasteful number, since it uses less digits than its factorization.

78284286775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2980482 (or 2980477 counting only the distinct ones).

The product of its digits is 84295680, while the sum is 64.

The spelling of 78284286775 in words is "seventy-eight billion, two hundred eighty-four million, two hundred eighty-six thousand, seven hundred seventy-five".