1263964456250 has 48 divisors (see below), whose sum is σ = 2451498640920. Its totient is φ = 488151720000.

The previous prime is 1263964456201. The next prime is 1263964456253. The reversal of 1263964456250 is 526544693621.

It can be written as a sum of positive squares in 12 ways, for example, as 427981565209 + 835982891041 = 654203^2 + 914321^2 .

It is a super-2 number, since 2×1263964456250² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1263964456192 and 1263964456201.

It is not an unprimeable number, because it can be changed into a prime (1263964456253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3305549 + ... + 3668048.

Almost surely, 2^{1263964456250} is an apocalyptic number.

1263964456250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1263964456250 is a deficient number, since it is larger than the sum of its proper divisors (1187534184670).

1263964456250 is an frugal number, since it uses more digits than its factorization.

1263964456250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6973653 (or 6973633 counting only the distinct ones).

The product of its (nonzero) digits is 9331200, while the sum is 53.

The spelling of 1263964456250 in words is "one trillion, two hundred sixty-three billion, nine hundred sixty-four million, four hundred fifty-six thousand, two hundred fifty".