126685138110 has 32 divisors (see below), whose sum is σ = 304053834240. Its totient is φ = 33781647648.

The previous prime is 126685138081. The next prime is 126685138127. The reversal of 126685138110 is 11831586621.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1596351 + ... + 1673829.

It is an arithmetic number, because the mean of its divisors is an integer number (9501682320).

Almost surely, 2^126685138110 is an apocalyptic number.

126685138110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

126685138110 is an abundant number, since it is smaller than the sum of its proper divisors (177368696130).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

126685138110 is a wasteful number, since it uses less digits than its factorization.

126685138110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131992.

The product of its (nonzero) digits is 69120, while the sum is 42.

The spelling of 126685138110 in words is "one hundred twenty-six billion, six hundred eighty-five million, one hundred thirty-eight thousand, one hundred ten".