136667118451 has 4 divisors (see below), whose sum is σ = 136668559392. Its totient is φ = 136665677512.

The previous prime is 136667118449. The next prime is 136667118463. The reversal of 136667118451 is 154811766631.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 154811766631 = 34301 ⋅4513331.

It is a cyclic number.

It is not a de Polignac number, because 136667118451 - 2¹ = 136667118449 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 136667118395 and 136667118404.

It is not an unprimeable number, because it can be changed into a prime (136667118431) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 567355 + ... + 771508.

It is an arithmetic number, because the mean of its divisors is an integer number (34167139848).

Almost surely, 2^136667118451 is an apocalyptic number.

136667118451 is a deficient number, since it is larger than the sum of its proper divisors (1440941).

136667118451 is a wasteful number, since it uses less digits than its factorization.

136667118451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1440940.

The product of its digits is 725760, while the sum is 49.

The spelling of 136667118451 in words is "one hundred thirty-six billion, six hundred sixty-seven million, one hundred eighteen thousand, four hundred fifty-one".