6566783926432 has 12 divisors (see below), whose sum is σ = 12928355855226. Its totient is φ = 3283391963200.

The previous prime is 6566783926427. The next prime is 6566783926433. The reversal of 6566783926432 is 2346293876656.

It can be written as a sum of positive squares in only one way, i.e., 5107220327056 + 1459563599376 = 2259916^2 + 1208124^2 .

It is a super-2 number, since 2×6566783926432² (a number of 26 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (6566783926433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102605998819 + ... + 102605998882.

Almost surely, 2^{6566783926432} is an apocalyptic number.

It is an amenable number.

6566783926432 is a deficient number, since it is larger than the sum of its proper divisors (6361571928794).

6566783926432 is a wasteful number, since it uses less digits than its factorization.

6566783926432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205211997711 (or 205211997703 counting only the distinct ones).

The product of its digits is 470292480, while the sum is 67.

The spelling of 6566783926432 in words is "six trillion, five hundred sixty-six billion, seven hundred eighty-three million, nine hundred twenty-six thousand, four hundred thirty-two".