136768437667 has 16 divisors (see below), whose sum is σ = 144158688000. Its totient is φ = 129565052064.

The previous prime is 136768437643. The next prime is 136768437671. The reversal of 136768437667 is 766734867631.

It is a de Polignac number, because none of the positive numbers 2^k-136768437667 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 136768437599 and 136768437608.

It is not an unprimeable number, because it can be changed into a prime (136768437677) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 818434 + ... + 971272.

It is an arithmetic number, because the mean of its divisors is an integer number (9009918000).

Almost surely, 2^136768437667 is an apocalyptic number.

136768437667 is a deficient number, since it is larger than the sum of its proper divisors (7390250333).

136768437667 is a wasteful number, since it uses less digits than its factorization.

136768437667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153450.

The product of its digits is 128024064, while the sum is 64.

The spelling of 136768437667 in words is "one hundred thirty-six billion, seven hundred sixty-eight million, four hundred thirty-seven thousand, six hundred sixty-seven".