1227566028746 has 4 divisors (see below), whose sum is σ = 1841349043122. Its totient is φ = 613783014372.

The previous prime is 1227566028709. The next prime is 1227566028757. The reversal of 1227566028746 is 6478206657221.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1091630025721 + 135936003025 = 1044811^2 + 368695^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1227566028691 and 1227566028700.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 306891507185 + ... + 306891507188.

Almost surely, 2^{1227566028746} is an apocalyptic number.

1227566028746 is a deficient number, since it is larger than the sum of its proper divisors (613783014376).

1227566028746 is an equidigital number, since it uses as much as digits as its factorization.

1227566028746 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 613783014375.

The product of its (nonzero) digits is 13547520, while the sum is 56.

The spelling of 1227566028746 in words is "one trillion, two hundred twenty-seven billion, five hundred sixty-six million, twenty-eight thousand, seven hundred forty-six".