126219678508 has 24 divisors (see below), whose sum is σ = 275388390144. Its totient is φ = 49176498000.

The previous prime is 126219678493. The next prime is 126219678511. The reversal of 126219678508 is 805876912621.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 204901768 + ... + 204902383.

It is an arithmetic number, because the mean of its divisors is an integer number (11474516256).

Almost surely, 2^126219678508 is an apocalyptic number.

It is an amenable number.

126219678508 is an abundant number, since it is smaller than the sum of its proper divisors (149168711636).

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

126219678508 is a wasteful number, since it uses less digits than its factorization.

126219678508 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 409804173 (or 409804171 counting only the distinct ones).

The product of its (nonzero) digits is 2903040, while the sum is 55.

The spelling of 126219678508 in words is "one hundred twenty-six billion, two hundred nineteen million, six hundred seventy-eight thousand, five hundred eight".