126518353508 has 18 divisors (see below), whose sum is σ = 222026474166. Its totient is φ = 63082710304.

The previous prime is 126518353499. The next prime is 126518353523. The reversal of 126518353508 is 805353815621.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 89214521344 + 37303832164 = 298688^2 + 193142^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 392816 + ... + 638232.

Almost surely, 2^126518353508 is an apocalyptic number.

It is an amenable number.

126518353508 is a deficient number, since it is larger than the sum of its proper divisors (95508120658).

126518353508 is an equidigital number, since it uses as much as digits as its factorization.

126518353508 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246139 (or 245778 counting only the distinct ones).

The product of its (nonzero) digits is 864000, while the sum is 47.

The spelling of 126518353508 in words is "one hundred twenty-six billion, five hundred eighteen million, three hundred fifty-three thousand, five hundred eight".