136731281390 has 48 divisors (see below), whose sum is σ = 271487931120. Its totient is φ = 49543401600.

The previous prime is 136731281377. The next prime is 136731281431. The reversal of 136731281390 is 93182137631.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 138941 + ... + 541079.

It is an arithmetic number, because the mean of its divisors is an integer number (5655998565).

Almost surely, 2^136731281390 is an apocalyptic number.

136731281390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

136731281390 is a deficient number, since it is larger than the sum of its proper divisors (134756649730).

136731281390 is a wasteful number, since it uses less digits than its factorization.

136731281390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 402449 (or 402438 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 44.

The spelling of 136731281390 in words is "one hundred thirty-six billion, seven hundred thirty-one million, two hundred eighty-one thousand, three hundred ninety".