1306622072656 has 10 divisors (see below), whose sum is σ = 2531580265802. Its totient is φ = 653311036320.

The previous prime is 1306622072617. The next prime is 1306622072711. The reversal of 1306622072656 is 6562702266031.

It can be written as a sum of positive squares in only one way, i.e., 910276279056 + 396345793600 = 954084^2 + 629560^2 .

It is a super-2 number, since 2×1306622072656² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40831939755 + ... + 40831939786.

Almost surely, 2^{1306622072656} is an apocalyptic number.

1306622072656 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1306622072656 is a deficient number, since it is larger than the sum of its proper divisors (1224958193146).

1306622072656 is an equidigital number, since it uses as much as digits as its factorization.

1306622072656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81663879549 (or 81663879543 counting only the distinct ones).

The product of its (nonzero) digits is 1088640, while the sum is 46.

The spelling of 1306622072656 in words is "one trillion, three hundred six billion, six hundred twenty-two million, seventy-two thousand, six hundred fifty-six".