136143421466 has 16 divisors (see below), whose sum is σ = 220330525128. Its totient is φ = 62719272000.

The previous prime is 136143421457. The next prime is 136143421481. The reversal of 136143421466 is 664124341631.

It can be written as a sum of positive squares in 4 ways, for example, as 62147997025 + 73995424441 = 249295^2 + 272021^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4825385 + ... + 4853516.

Almost surely, 2^136143421466 is an apocalyptic number.

136143421466 is a deficient number, since it is larger than the sum of its proper divisors (84187103662).

136143421466 is a wasteful number, since it uses less digits than its factorization.

136143421466 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9679457.

The product of its digits is 248832, while the sum is 41.

The spelling of 136143421466 in words is "one hundred thirty-six billion, one hundred forty-three million, four hundred twenty-one thousand, four hundred sixty-six".