126648654520 has 64 divisors (see below), whose sum is σ = 297846720000. Its totient is φ = 48375769728.

The previous prime is 126648654499. The next prime is 126648654547. The reversal of 126648654520 is 25456846621.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 436171 + ... + 665989.

It is an arithmetic number, because the mean of its divisors is an integer number (4653855000).

Almost surely, 2^126648654520 is an apocalyptic number.

126648654520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 126648654520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (148923360000).

126648654520 is an abundant number, since it is smaller than the sum of its proper divisors (171198065480).

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

126648654520 is a wasteful number, since it uses less digits than its factorization.

126648654520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 230452 (or 230448 counting only the distinct ones).

The product of its (nonzero) digits is 2764800, while the sum is 49.

The spelling of 126648654520 in words is "one hundred twenty-six billion, six hundred forty-eight million, six hundred fifty-four thousand, five hundred twenty".