126856490211 has 24 divisors (see below), whose sum is σ = 211653612144. Its totient is φ = 72360207360.

The previous prime is 126856490209. The next prime is 126856490221. The reversal of 126856490211 is 112094658621.

126856490211 is a `hidden beast` number, since 1 + 2 + 68 + 564 + 9 + 0 + 21 + 1 = 666.

It is not a de Polignac number, because 126856490211 - 2¹ = 126856490209 is a prime.

It is not an unprimeable number, because it can be changed into a prime (126856490221) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 37685926 + ... + 37689291.

It is an arithmetic number, because the mean of its divisors is an integer number (8818900506).

Almost surely, 2^126856490211 is an apocalyptic number.

126856490211 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

126856490211 is a deficient number, since it is larger than the sum of its proper divisors (84797121933).

126856490211 is a wasteful number, since it uses less digits than its factorization.

126856490211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75375251 (or 75375248 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 45.

The spelling of 126856490211 in words is "one hundred twenty-six billion, eight hundred fifty-six million, four hundred ninety thousand, two hundred eleven".