78571770563 has 16 divisors (see below), whose sum is σ = 92391516000. Its totient is φ = 65874766080.

The previous prime is 78571770559. The next prime is 78571770601. The reversal of 78571770563 is 36507717587.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 78571770563 - 2² = 78571770559 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 78571770499 and 78571770508.

It is not an unprimeable number, because it can be changed into a prime (78571770503) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 89138 + ... + 406311.

It is an arithmetic number, because the mean of its divisors is an integer number (5774469750).

Almost surely, 2^78571770563 is an apocalyptic number.

78571770563 is a deficient number, since it is larger than the sum of its proper divisors (13819745437).

78571770563 is a wasteful number, since it uses less digits than its factorization.

78571770563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 496582.

The product of its (nonzero) digits is 8643600, while the sum is 56.

The spelling of 78571770563 in words is "seventy-eight billion, five hundred seventy-one million, seven hundred seventy thousand, five hundred sixty-three".