126207831381 has 16 divisors (see below), whose sum is σ = 168830524800. Its totient is φ = 83862252288.

The previous prime is 126207831371. The next prime is 126207831397. The reversal of 126207831381 is 183138702621.

It is not a de Polignac number, because 126207831381 - 2⁹ = 126207830869 is a prime.

It is a super-2 number, since 2×126207831381² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126207831331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1209865 + ... + 1310033.

It is an arithmetic number, because the mean of its divisors is an integer number (10551907800).

Almost surely, 2^126207831381 is an apocalyptic number.

It is an amenable number.

126207831381 is a deficient number, since it is larger than the sum of its proper divisors (42622693419).

126207831381 is a wasteful number, since it uses less digits than its factorization.

126207831381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101548.

The product of its (nonzero) digits is 96768, while the sum is 42.

The spelling of 126207831381 in words is "one hundred twenty-six billion, two hundred seven million, eight hundred thirty-one thousand, three hundred eighty-one".