78314511171236 has 6 divisors (see below), whose sum is σ = 137050394549670. Its totient is φ = 39157255585616.

The previous prime is 78314511171217. The next prime is 78314511171319. The reversal of 78314511171236 is 63217111541387.

78314511171236 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 61716578880100 + 16597932291136 = 7855990^2 + 4074056^2 .

It is a super-2 number, since 2×78314511171236² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9789313896401 + ... + 9789313896408.

It is an arithmetic number, because the mean of its divisors is an integer number (22841732424945).

Almost surely, 2^{78314511171236} is an apocalyptic number.

It is an amenable number.

78314511171236 is a deficient number, since it is larger than the sum of its proper divisors (58735883378434).

78314511171236 is a wasteful number, since it uses less digits than its factorization.

78314511171236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19578627792813 (or 19578627792811 counting only the distinct ones).

The product of its digits is 846720, while the sum is 50.

The spelling of 78314511171236 in words is "seventy-eight trillion, three hundred fourteen billion, five hundred eleven million, one hundred seventy-one thousand, two hundred thirty-six".