1263263319458 has 16 divisors (see below), whose sum is σ = 2172985375680. Its totient is φ = 539550787056.

The previous prime is 1263263319457. The next prime is 1263263319481. The reversal of 1263263319458 is 8549133623621.

It is a super-2 number, since 2×1263263319458² (a number of 25 digits) contains 22 as substring.

It is a Curzon number.

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 7 ways as a sum of consecutive naturals, for example, 153977288 + ... + 153985491.

It is an arithmetic number, because the mean of its divisors is an integer number (135811585980).

Almost surely, 2^{1263263319458} is an apocalyptic number.

1263263319458 is a deficient number, since it is larger than the sum of its proper divisors (909722056222).

1263263319458 is a wasteful number, since it uses less digits than its factorization.

1263263319458 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 307963081.

The product of its digits is 5598720, while the sum is 53.

The spelling of 1263263319458 in words is "one trillion, two hundred sixty-three billion, two hundred sixty-three million, three hundred nineteen thousand, four hundred fifty-eight".