78755441956 has 9 divisors (see below), whose sum is σ = 137823005649. Its totient is φ = 39377440344.

The previous prime is 78755441953. The next prime is 78755441993. The reversal of 78755441956 is 65914455787.

The square root of 78755441956 is 280634.

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., 77768476900 + 986965056 = 278870^2 + 31416^2 .

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 78755441894 and 78755441903.

It is not an unprimeable number, because it can be changed into a prime (78755441953) 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, 491110 + ... + 631426.

Almost surely, 2^78755441956 is an apocalyptic number.

78755441956 is the 280634-th square number.

It is an amenable number.

78755441956 is a deficient number, since it is larger than the sum of its proper divisors (59067563693).

78755441956 is an frugal number, since it uses more digits than its factorization.

78755441956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 280638 (or 140319 counting only the distinct ones).

The product of its digits is 42336000, while the sum is 61.

The spelling of 78755441956 in words is "seventy-eight billion, seven hundred fifty-five million, four hundred forty-one thousand, nine hundred fifty-six".