126520194966488 has 128 divisors (see below), whose sum is σ = 257755643424000. Its totient is φ = 58094707507200.

The previous prime is 126520194966467. The next prime is 126520194966541. The reversal of 126520194966488 is 884669491025621.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 67568120 + ... + 69415352.

It is an arithmetic number, because the mean of its divisors is an integer number (2013715964250).

Almost surely, 2^{126520194966488} is an apocalyptic number.

It is an amenable number.

126520194966488 is an abundant number, since it is smaller than the sum of its proper divisors (131235448457512).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

126520194966488 is a wasteful number, since it uses less digits than its factorization.

126520194966488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1847485 (or 1847481 counting only the distinct ones).

The product of its (nonzero) digits is 358318080, while the sum is 71.

The spelling of 126520194966488 in words is "one hundred twenty-six trillion, five hundred twenty billion, one hundred ninety-four million, nine hundred sixty-six thousand, four hundred eighty-eight".