78863200357 has 4 divisors (see below), whose sum is σ = 78864212556. Its totient is φ = 78862188160.

The previous prime is 78863200337. The next prime is 78863200373. The reversal of 78863200357 is 75300236887.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 75300236887 = 18797 ⋅4005971.

It can be written as a sum of positive squares in 2 ways, for example, as 44113020961 + 34750179396 = 210031^2 + 186414^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-78863200357 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 78863200357.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78863200327) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 378508 + ... + 548629.

It is an arithmetic number, because the mean of its divisors is an integer number (19716053139).

Almost surely, 2^78863200357 is an apocalyptic number.

It is an amenable number.

78863200357 is a deficient number, since it is larger than the sum of its proper divisors (1012199).

78863200357 is an equidigital number, since it uses as much as digits as its factorization.

78863200357 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1012198.

The product of its (nonzero) digits is 1693440, while the sum is 49.

The spelling of 78863200357 in words is "seventy-eight billion, eight hundred sixty-three million, two hundred thousand, three hundred fifty-seven".