78154995316 has 12 divisors (see below), whose sum is σ = 136863106660. Its totient is φ = 39051250560.

The previous prime is 78154995307. The next prime is 78154995343. The reversal of 78154995316 is 61359945187.

It can be written as a sum of positive squares in 2 ways, for example, as 7214803600 + 70940191716 = 84940^2 + 266346^2 .

It is a super-2 number, since 2×78154995316² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6555075 + ... + 6566986.

Almost surely, 2^78154995316 is an apocalyptic number.

It is an amenable number.

78154995316 is a deficient number, since it is larger than the sum of its proper divisors (58708111344).

78154995316 is a wasteful number, since it uses less digits than its factorization.

78154995316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13123554 (or 13123552 counting only the distinct ones).

The product of its digits is 8164800, while the sum is 58.

The spelling of 78154995316 in words is "seventy-eight billion, one hundred fifty-four million, nine hundred ninety-five thousand, three hundred sixteen".