78641175885 has 32 divisors (see below), whose sum is σ = 126372110592. Its totient is φ = 41760230400.

The previous prime is 78641175869. The next prime is 78641175913. The reversal of 78641175885 is 58857114687.

It is not a de Polignac number, because 78641175885 - 2⁴ = 78641175869 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3816360 + ... + 3836910.

It is an arithmetic number, because the mean of its divisors is an integer number (3949128456).

Almost surely, 2^78641175885 is an apocalyptic number.

It is an amenable number.

78641175885 is a deficient number, since it is larger than the sum of its proper divisors (47730934707).

78641175885 is a wasteful number, since it uses less digits than its factorization.

78641175885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21653.

The product of its digits is 15052800, while the sum is 60.

The spelling of 78641175885 in words is "seventy-eight billion, six hundred forty-one million, one hundred seventy-five thousand, eight hundred eighty-five".