1263929068516 has 27 divisors (see below), whose sum is σ = 2285654393673. Its totient is φ = 611544854160.

The previous prime is 1263929068513. The next prime is 1263929068559. The reversal of 1263929068516 is 6158609293621.

The square root of 1263929068516 is 1124246.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 520374676900 + 743554391616 = 721370^2 + 862296^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1263929068513) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 69694186 + ... + 69712318.

Almost surely, 2^{1263929068516} is an apocalyptic number.

1263929068516 is the 1124246-th square number.

It is an amenable number.

1263929068516 is a deficient number, since it is larger than the sum of its proper divisors (1021725325157).

1263929068516 is an frugal number, since it uses more digits than its factorization.

1263929068516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36332 (or 18166 counting only the distinct ones).

The product of its (nonzero) digits is 8398080, while the sum is 58.

The spelling of 1263929068516 in words is "one trillion, two hundred sixty-three billion, nine hundred twenty-nine million, sixty-eight thousand, five hundred sixteen".