1294255565568 has 108 divisors (see below), whose sum is σ = 4264751899408. Its totient is φ = 369787299840.

The previous prime is 1294255565501. The next prime is 1294255565657. The reversal of 1294255565568 is 8655655524921.

It is a happy number.

1294255565568 is a `hidden beast` number, since 1 + 2 + 9 + 4 + 2 + 5 + 5 + 5 + 65 + 568 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 40108363 + ... + 40140618.

Almost surely, 2^{1294255565568} is an apocalyptic number.

1294255565568 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1294255565568 is an abundant number, since it is smaller than the sum of its proper divisors (2970496333840).

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

1294255565568 is an equidigital number, since it uses as much as digits as its factorization.

1294255565568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80249010 (or 80248993 counting only the distinct ones).

The product of its digits is 129600000, while the sum is 63.

The spelling of 1294255565568 in words is "one trillion, two hundred ninety-four billion, two hundred fifty-five million, five hundred sixty-five thousand, five hundred sixty-eight".