1263263319459 has 24 divisors (see below), whose sum is σ = 1932208482672. Its totient is φ = 792570700800.

The previous prime is 1263263319457. The next prime is 1263263319481. The reversal of 1263263319459 is 9549133623621.

1263263319459 is a `hidden beast` number, since 1 + 2 + 63 + 263 + 319 + 4 + 5 + 9 = 666.

It is not a de Polignac number, because 1263263319459 - 2¹ = 1263263319457 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1263263319457) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1564452 + ... + 2230254.

It is an arithmetic number, because the mean of its divisors is an integer number (80508686778).

Almost surely, 2^{1263263319459} is an apocalyptic number.

1263263319459 is a deficient number, since it is larger than the sum of its proper divisors (668945163213).

1263263319459 is a wasteful number, since it uses less digits than its factorization.

1263263319459 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 678227 (or 678224 counting only the distinct ones).

The product of its digits is 6298560, while the sum is 54.

The spelling of 1263263319459 in words is "one trillion, two hundred sixty-three billion, two hundred sixty-three million, three hundred nineteen thousand, four hundred fifty-nine".