1263466431648 has 96 divisors (see below), whose sum is σ = 3730605822720. Its totient is φ = 421155453888.

The previous prime is 1263466431631. The next prime is 1263466431781. The reversal of 1263466431648 is 8461346643621.

It is a happy number.

1263466431648 is a `hidden beast` number, since 1 + 263 + 4 + 6 + 64 + 316 + 4 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 1263466431594 and 1263466431603.

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, 8956840 + ... + 9096807.

It is an arithmetic number, because the mean of its divisors is an integer number (38860477320).

Almost surely, 2^{1263466431648} is an apocalyptic number.

1263466431648 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1263466431648 is an abundant number, since it is smaller than the sum of its proper divisors (2467139391072).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1263466431648 is an frugal number, since it uses more digits than its factorization.

1263466431648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18053678 (or 18053652 counting only the distinct ones).

The product of its digits is 11943936, while the sum is 54.

The spelling of 1263466431648 in words is "one trillion, two hundred sixty-three billion, four hundred sixty-six million, four hundred thirty-one thousand, six hundred forty-eight".