78887382145805 has 16 divisors (see below), whose sum is σ = 95011452286464. Its totient is φ = 62879086607040.

The previous prime is 78887382145709. The next prime is 78887382145853. The reversal of 78887382145805 is 50854128378887.

It is not a de Polignac number, because 78887382145805 - 2²⁴ = 78887365368589 is a prime.

It is a super-3 number, since 3×78887382145805³ (a number of 43 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12615962 + ... + 17802731.

It is an arithmetic number, because the mean of its divisors is an integer number (5938215767904).

Almost surely, 2^{78887382145805} is an apocalyptic number.

It is an amenable number.

78887382145805 is a deficient number, since it is larger than the sum of its proper divisors (16124070140659).

78887382145805 is a wasteful number, since it uses less digits than its factorization.

78887382145805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30420596.

The product of its (nonzero) digits is 963379200, while the sum is 74.

The spelling of 78887382145805 in words is "seventy-eight trillion, eight hundred eighty-seven billion, three hundred eighty-two million, one hundred forty-five thousand, eight hundred five".