78150438916 has 81 divisors (see below), whose sum is σ = 153060636981. Its totient is φ = 34888339200.

The previous prime is 78150438913. The next prime is 78150438923. The reversal of 78150438916 is 61983405187.

The square root of 78150438916 is 279554.

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

It can be written as a sum of positive squares in only one way, i.e., 35092528900 + 43057910016 = 187330^2 + 207504^2 .

It is a super-2 number, since 2×78150438916² (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 (78150438913) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 596568171 + ... + 596568301.

Almost surely, 2^78150438916 is an apocalyptic number.

78150438916 is the 279554-th square number.

It is an amenable number.

78150438916 is a deficient number, since it is larger than the sum of its proper divisors (74910198065).

78150438916 is a wasteful number, since it uses less digits than its factorization.

78150438916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 482 (or 241 counting only the distinct ones).

The product of its (nonzero) digits is 1451520, while the sum is 52.

The spelling of 78150438916 in words is "seventy-eight billion, one hundred fifty million, four hundred thirty-eight thousand, nine hundred sixteen".