1263715327845 has 48 divisors (see below), whose sum is σ = 2222055264000. Its totient is φ = 664283617920.

The previous prime is 1263715327841. The next prime is 1263715327871. The reversal of 1263715327845 is 5487235173621.

1263715327845 is a `hidden beast` number, since 1 + 2 + 6 + 37 + 1 + 532 + 78 + 4 + 5 = 666.

It is not a de Polignac number, because 1263715327845 - 2² = 1263715327841 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1263715327791 and 1263715327800.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1263715327841) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 1718631 + ... + 2341179.

It is an arithmetic number, because the mean of its divisors is an integer number (46292818000).

Almost surely, 2^{1263715327845} is an apocalyptic number.

1263715327845 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1263715327845 is a deficient number, since it is larger than the sum of its proper divisors (958339936155).

1263715327845 is a wasteful number, since it uses less digits than its factorization.

1263715327845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 623210 (or 623207 counting only the distinct ones).

The product of its digits is 8467200, while the sum is 54.

The spelling of 1263715327845 in words is "one trillion, two hundred sixty-three billion, seven hundred fifteen million, three hundred twenty-seven thousand, eight hundred forty-five".