1263263319465 has 16 divisors (see below), whose sum is σ = 2309967212928. Its totient is φ = 577491803136.

The previous prime is 1263263319457. The next prime is 1263263319481. The reversal of 1263263319465 is 5649133623621.

It is not a de Polignac number, because 1263263319465 - 2³ = 1263263319457 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6015539512 + ... + 6015539721.

It is an arithmetic number, because the mean of its divisors is an integer number (144372950808).

Almost surely, 2^{1263263319465} is an apocalyptic number.

1263263319465 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1263263319465 is a deficient number, since it is larger than the sum of its proper divisors (1046703893463).

1263263319465 is a wasteful number, since it uses less digits than its factorization.

1263263319465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12031079248.

The product of its digits is 4199040, while the sum is 51.

The spelling of 1263263319465 in words is "one trillion, two hundred sixty-three billion, two hundred sixty-three million, three hundred nineteen thousand, four hundred sixty-five".