1303226440656 has 80 divisors (see below), whose sum is σ = 3853304932224. Its totient is φ = 371800346112.

The previous prime is 1303226440609. The next prime is 1303226440669. The reversal of 1303226440656 is 6560446223031.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2637115 + ... + 3092058.

Almost surely, 2^{1303226440656} is an apocalyptic number.

1303226440656 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1303226440656 is an abundant number, since it is smaller than the sum of its proper divisors (2550078491568).

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

1303226440656 is a wasteful number, since it uses less digits than its factorization.

1303226440656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5729868 (or 5729862 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 42.

The spelling of 1303226440656 in words is "one trillion, three hundred three billion, two hundred twenty-six million, four hundred forty thousand, six hundred fifty-six".