78862688626887 has 72 divisors (see below), whose sum is σ = 127495391616320. Its totient is φ = 46929831062400.

The previous prime is 78862688626859. The next prime is 78862688626937.

78862688626887 is a `hidden beast` number, since 7 + 8 + 8 + 6 + 268 + 8 + 6 + 268 + 87 = 666.

78862688626887 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 78862688626887 - 2¹⁸ = 78862688364743 is a prime.

It is a super-2 number, since 2×78862688626887² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 78862688626797 and 78862688626806.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78862688626187) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 13039353 + ... + 18103869.

Almost surely, 2^{78862688626887} is an apocalyptic number.

78862688626887 is a deficient number, since it is larger than the sum of its proper divisors (48632702989433).

78862688626887 is a wasteful number, since it uses less digits than its factorization.

78862688626887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5064805 (or 5064791 counting only the distinct ones).

The product of its digits is 66588770304, while the sum is 90.

The spelling of 78862688626887 in words is "seventy-eight trillion, eight hundred sixty-two billion, six hundred eighty-eight million, six hundred twenty-six thousand, eight hundred eighty-seven".