126350831205 has 20 divisors (see below), whose sum is σ = 226495564812. Its totient is φ = 67387109760.

The previous prime is 126350831203. The next prime is 126350831219. The reversal of 126350831205 is 502138053621.

126350831205 is a `hidden beast` number, since 1 + 2 + 635 + 0 + 8 + 3 + 12 + 0 + 5 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 99230670081 + 27120161124 = 315009^2 + 164682^2 .

It is not a de Polignac number, because 126350831205 - 2¹ = 126350831203 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 126350831205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126350831203) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 155988276 + ... + 155989085.

Almost surely, 2^126350831205 is an apocalyptic number.

126350831205 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

126350831205 is a deficient number, since it is larger than the sum of its proper divisors (100144733607).

126350831205 is an equidigital number, since it uses as much as digits as its factorization.

126350831205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 311977378 (or 311977369 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 36.

Adding to 126350831205 its reverse (502138053621), we get a palindrome (628488884826).

The spelling of 126350831205 in words is "one hundred twenty-six billion, three hundred fifty million, eight hundred thirty-one thousand, two hundred five".