78151082647 has 16 divisors (see below), whose sum is σ = 88387407360. Its totient is φ = 68478462400.

The previous prime is 78151082621. The next prime is 78151082707. The reversal of 78151082647 is 74628015187.

It is not a de Polignac number, because 78151082647 - 2¹¹ = 78151080599 is a prime.

It is a super-2 number, since 2×78151082647² (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 78151082647.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78151082747) 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 15 ways as a sum of consecutive naturals, for example, 1006447 + ... + 1081312.

It is an arithmetic number, because the mean of its divisors is an integer number (5524212960).

Almost surely, 2^78151082647 is an apocalyptic number.

78151082647 is a deficient number, since it is larger than the sum of its proper divisors (10236324713).

78151082647 is a wasteful number, since it uses less digits than its factorization.

78151082647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2087894.

The product of its (nonzero) digits is 752640, while the sum is 49.

The spelling of 78151082647 in words is "seventy-eight billion, one hundred fifty-one million, eighty-two thousand, six hundred forty-seven".