78468663216 has 40 divisors (see below), whose sum is σ = 202747880944. Its totient is φ = 26151425280.

The previous prime is 78468663211. The next prime is 78468663239. The reversal of 78468663216 is 61236686487.

It is a super-2 number, since 2×78468663216² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (78468663211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 119646 + ... + 413826.

Almost surely, 2^78468663216 is an apocalyptic number.

It is an amenable number.

78468663216 is an abundant number, since it is smaller than the sum of its proper divisors (124279217728).

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

78468663216 is a wasteful number, since it uses less digits than its factorization.

78468663216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 299749 (or 299743 counting only the distinct ones).

The product of its digits is 13934592, while the sum is 57.

The spelling of 78468663216 in words is "seventy-eight billion, four hundred sixty-eight million, six hundred sixty-three thousand, two hundred sixteen".