1263494726480 has 40 divisors (see below), whose sum is σ = 3357285988992. Its totient is φ = 433198191744.

The previous prime is 1263494726447. The next prime is 1263494726491. The reversal of 1263494726480 is 846274943621.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (56).

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 1128119732 + ... + 1128120851.

Almost surely, 2^{1263494726480} is an apocalyptic number.

1263494726480 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1263494726480 is an abundant number, since it is smaller than the sum of its proper divisors (2093791262512).

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

1263494726480 is a wasteful number, since it uses less digits than its factorization.

1263494726480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2256240603 (or 2256240597 counting only the distinct ones).

The product of its (nonzero) digits is 13934592, while the sum is 56.

The spelling of 1263494726480 in words is "one trillion, two hundred sixty-three billion, four hundred ninety-four million, seven hundred twenty-six thousand, four hundred eighty".