78195473316 has 18 divisors (see below), whose sum is σ = 197660779862. Its totient is φ = 26065157760.

The previous prime is 78195473311. The next prime is 78195473341. The reversal of 78195473316 is 61337459187.

78195473316 is a `hidden beast` number, since 7 + 81 + 9 + 547 + 3 + 3 + 16 = 666.

It can be written as a sum of positive squares in only one way, i.e., 65040300900 + 13155172416 = 255030^2 + 114696^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×78195473316² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (78195473311) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1086048205 + ... + 1086048276.

Almost surely, 2^78195473316 is an apocalyptic number.

It is an amenable number.

78195473316 is an abundant number, since it is smaller than the sum of its proper divisors (119465306546).

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

78195473316 is a wasteful number, since it uses less digits than its factorization.

78195473316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2172096491 (or 2172096486 counting only the distinct ones).

The product of its digits is 3810240, while the sum is 54.

The spelling of 78195473316 in words is "seventy-eight billion, one hundred ninety-five million, four hundred seventy-three thousand, three hundred sixteen".