78538886575 has 12 divisors (see below), whose sum is σ = 97501884480. Its totient is φ = 62757776960.

The previous prime is 78538886567. The next prime is 78538886581. The reversal of 78538886575 is 57568883587.

It is not a de Polignac number, because 78538886575 - 2³ = 78538886567 is a prime.

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 11 ways as a sum of consecutive naturals, for example, 1811455 + ... + 1854304.

It is an arithmetic number, because the mean of its divisors is an integer number (8125157040).

Almost surely, 2^78538886575 is an apocalyptic number.

78538886575 is a deficient number, since it is larger than the sum of its proper divisors (18962997905).

78538886575 is a wasteful number, since it uses less digits than its factorization.

78538886575 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3666626 (or 3666621 counting only the distinct ones).

The product of its digits is 451584000, while the sum is 70.

The spelling of 78538886575 in words is "seventy-eight billion, five hundred thirty-eight million, eight hundred eighty-six thousand, five hundred seventy-five".