126986730399 has 8 divisors (see below), whose sum is σ = 188128489520. Its totient is φ = 84657820248.

The previous prime is 126986730379. The next prime is 126986730421. The reversal of 126986730399 is 993037689621.

126986730399 is a `hidden beast` number, since 1 + 269 + 8 + 67 + 303 + 9 + 9 = 666.

It is not a de Polignac number, because 126986730399 - 2²⁸ = 126718294943 is a prime.

It is a super-3 number, since 3×126986730399³ (a number of 34 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126986730319) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2351606092 + ... + 2351606145.

It is an arithmetic number, because the mean of its divisors is an integer number (23516061190).

Almost surely, 2^126986730399 is an apocalyptic number.

126986730399 is a deficient number, since it is larger than the sum of its proper divisors (61141759121).

126986730399 is an equidigital number, since it uses as much as digits as its factorization.

126986730399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4703212246 (or 4703212240 counting only the distinct ones).

The product of its (nonzero) digits is 26453952, while the sum is 63.

The spelling of 126986730399 in words is "one hundred twenty-six billion, nine hundred eighty-six million, seven hundred thirty thousand, three hundred ninety-nine".