1266503125016 has 32 divisors (see below), whose sum is σ = 2389341024000. Its totient is φ = 629346878496.

The previous prime is 1266503124973. The next prime is 1266503125031. The reversal of 1266503125016 is 6105213056621.

It is a congruent 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, 7638725 + ... + 7802763.

It is an arithmetic number, because the mean of its divisors is an integer number (74666907000).

Almost surely, 2^{1266503125016} is an apocalyptic number.

It is an amenable number.

1266503125016 is a deficient number, since it is larger than the sum of its proper divisors (1122837898984).

1266503125016 is a wasteful number, since it uses less digits than its factorization.

1266503125016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169991 (or 169987 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 38.

The spelling of 1266503125016 in words is "one trillion, two hundred sixty-six billion, five hundred three million, one hundred twenty-five thousand, sixteen".