1366422404656 has 40 divisors (see below), whose sum is σ = 2659286937600. Its totient is φ = 680155445760.

The previous prime is 1366422404623. The next prime is 1366422404663. The reversal of 1366422404656 is 6564042246631.

It is a super-2 number, since 2×1366422404656² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56263236 + ... + 56287516.

It is an arithmetic number, because the mean of its divisors is an integer number (66482173440).

Almost surely, 2^{1366422404656} is an apocalyptic number.

1366422404656 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1366422404656 is a deficient number, since it is larger than the sum of its proper divisors (1292864532944).

1366422404656 is a wasteful number, since it uses less digits than its factorization.

1366422404656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39877 (or 39871 counting only the distinct ones).

The product of its (nonzero) digits is 4976640, while the sum is 49.

The spelling of 1366422404656 in words is "one trillion, three hundred sixty-six billion, four hundred twenty-two million, four hundred four thousand, six hundred fifty-six".