136679976686 has 64 divisors (see below), whose sum is σ = 241951297536. Its totient is φ = 57260755200.

The previous prime is 136679976649. The next prime is 136679976689. The reversal of 136679976686 is 686679976631.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136679976689) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3636140 + ... + 3673536.

It is an arithmetic number, because the mean of its divisors is an integer number (3780489024).

Almost surely, 2^136679976686 is an apocalyptic number.

136679976686 is a deficient number, since it is larger than the sum of its proper divisors (105271320850).

136679976686 is a wasteful number, since it uses less digits than its factorization.

136679976686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37697.

The product of its digits is 740710656, while the sum is 74.

Subtracting 136679976686 from its reverse (686679976631), we obtain a palindrome (549999999945).

The spelling of 136679976686 in words is "one hundred thirty-six billion, six hundred seventy-nine million, nine hundred seventy-six thousand, six hundred eighty-six".