16312678806864 has 80 divisors (see below), whose sum is σ = 46203110668800. Its totient is φ = 4918395588480.

The previous prime is 16312678806829. The next prime is 16312678806913. The reversal of 16312678806864 is 46860887621361.

It is a super-2 number, since 2×16312678806864² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (66).

It is a junction number, because it is equal to n+sod(n) for n = 16312678806795 and 16312678806804.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 77521122 + ... + 77731265.

It is an arithmetic number, because the mean of its divisors is an integer number (577538883360).

Almost surely, 2^{16312678806864} is an apocalyptic number.

It is an amenable number.

16312678806864 is an abundant number, since it is smaller than the sum of its proper divisors (29890431861936).

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

16312678806864 is a wasteful number, since it uses less digits than its factorization.

16312678806864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155252608 (or 155252602 counting only the distinct ones).

The product of its (nonzero) digits is 111476736, while the sum is 66.

The spelling of 16312678806864 in words is "sixteen trillion, three hundred twelve billion, six hundred seventy-eight million, eight hundred six thousand, eight hundred sixty-four".