78327628287 has 16 divisors (see below), whose sum is σ = 107085132000. Its totient is φ = 50906823552.

The previous prime is 78327628283. The next prime is 78327628303. The reversal of 78327628287 is 78282672387.

It is not a de Polignac number, because 78327628287 - 2² = 78327628283 is a prime.

It is a super-2 number, since 2×78327628287² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 78327628287.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78327628283) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1543912 + ... + 1593837.

It is an arithmetic number, because the mean of its divisors is an integer number (6692820750).

Almost surely, 2^78327628287 is an apocalyptic number.

78327628287 is a deficient number, since it is larger than the sum of its proper divisors (28757503713).

78327628287 is a wasteful number, since it uses less digits than its factorization.

78327628287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3137962.

The product of its digits is 25288704, while the sum is 60.

The spelling of 78327628287 in words is "seventy-eight billion, three hundred twenty-seven million, six hundred twenty-eight thousand, two hundred eighty-seven".