136191143933 has 12 divisors (see below), whose sum is σ = 147502142388. Its totient is φ = 125690273280.

The previous prime is 136191143929. The next prime is 136191143941. The reversal of 136191143933 is 339341191631.

It can be written as a sum of positive squares in 6 ways, for example, as 44680658884 + 91510485049 = 211378^2 + 302507^2 .

It is not a de Polignac number, because 136191143933 - 2² = 136191143929 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136191143953) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 816191 + ... + 968787.

It is an arithmetic number, because the mean of its divisors is an integer number (12291845199).

Almost surely, 2^136191143933 is an apocalyptic number.

136191143933 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

136191143933 is a deficient number, since it is larger than the sum of its proper divisors (11310998455).

136191143933 is a wasteful number, since it uses less digits than its factorization.

136191143933 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157904 (or 157891 counting only the distinct ones).

The product of its digits is 157464, while the sum is 44.

The spelling of 136191143933 in words is "one hundred thirty-six billion, one hundred ninety-one million, one hundred forty-three thousand, nine hundred thirty-three".