78346249216 has 33 divisors (see below), whose sum is σ = 156633895579. Its totient is φ = 39168646144.

The previous prime is 78346249213. The next prime is 78346249237. The reversal of 78346249216 is 61294264387.

The square root of 78346249216 is 279904.

It is a perfect power (a square), and thus also a powerful number.

It is a super-2 number, since 2×78346249216² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78346249213) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 8952555 + ... + 8961301.

Almost surely, 2^78346249216 is an apocalyptic number.

78346249216 is the 279904-th square number.

It is an amenable number.

78346249216 is a deficient number, since it is larger than the sum of its proper divisors (78287646363).

78346249216 is an frugal number, since it uses more digits than its factorization.

78346249216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17514 (or 8749 counting only the distinct ones).

The product of its digits is 3483648, while the sum is 52.

The spelling of 78346249216 in words is "seventy-eight billion, three hundred forty-six million, two hundred forty-nine thousand, two hundred sixteen".