78286886207 has 4 divisors (see below), whose sum is σ = 78357479640. Its totient is φ = 78216292776.

The previous prime is 78286886177. The next prime is 78286886213. The reversal of 78286886207 is 70268868287.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 78286886207 - 2¹⁶ = 78286820671 is a prime.

It is a super-2 number, since 2×78286886207² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 78286886207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78286885207) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35295053 + ... + 35297270.

It is an arithmetic number, because the mean of its divisors is an integer number (19589369910).

Almost surely, 2^78286886207 is an apocalyptic number.

78286886207 is a deficient number, since it is larger than the sum of its proper divisors (70593433).

78286886207 is a wasteful number, since it uses less digits than its factorization.

78286886207 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70593432.

The product of its (nonzero) digits is 28901376, while the sum is 62.

The spelling of 78286886207 in words is "seventy-eight billion, two hundred eighty-six million, eight hundred eighty-six thousand, two hundred seven".