78761825788 has 24 divisors (see below), whose sum is σ = 145279341200. Its totient is φ = 37258921728.

The previous prime is 78761825777. The next prime is 78761825789. The reversal of 78761825788 is 88752816787.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78761825789) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 626973 + ... + 742036.

Almost surely, 2^78761825788 is an apocalyptic number.

It is an amenable number.

78761825788 is a deficient number, since it is larger than the sum of its proper divisors (66517515412).

78761825788 is a wasteful number, since it uses less digits than its factorization.

78761825788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1369789 (or 1369787 counting only the distinct ones).

The product of its digits is 84295680, while the sum is 67.

Subtracting 78761825788 from its reverse (88752816787), we obtain a palindrome (9990990999).

The spelling of 78761825788 in words is "seventy-eight billion, seven hundred sixty-one million, eight hundred twenty-five thousand, seven hundred eighty-eight".