78287914680 has 32 divisors (see below), whose sum is σ = 234863744400. Its totient is φ = 20876777216.

The previous prime is 78287914669. The next prime is 78287914687. The reversal of 78287914680 is 8641978287.

It is a super-2 number, since 2×78287914680² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78287914687) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 326199525 + ... + 326199764.

Almost surely, 2^78287914680 is an apocalyptic number.

It is an amenable number.

78287914680 is an abundant number, since it is smaller than the sum of its proper divisors (156575829720).

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

78287914680 is a wasteful number, since it uses less digits than its factorization.

78287914680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 652399303 (or 652399299 counting only the distinct ones).

The product of its (nonzero) digits is 10838016, while the sum is 60.

The spelling of 78287914680 in words is "seventy-eight billion, two hundred eighty-seven million, nine hundred fourteen thousand, six hundred eighty".