1227069615977 has 2 divisors, whose sum is σ = 1227069615978. Its totient is φ = 1227069615976.

The previous prime is 1227069615953. The next prime is 1227069616021. The reversal of 1227069615977 is 7795169607221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 938846661481 + 288222954496 = 968941^2 + 536864^2 .

It is a cyclic number.

It is not a de Polignac number, because 1227069615977 - 2³² = 1222774648681 is a prime.

It is not a weakly prime, because it can be changed into another prime (1227069695977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 613534807988 + 613534807989.

It is an arithmetic number, because the mean of its divisors is an integer number (613534807989).

Almost surely, 2^{1227069615977} is an apocalyptic number.

It is an amenable number.

1227069615977 is a deficient number, since it is larger than the sum of its proper divisors (1).

1227069615977 is an equidigital number, since it uses as much as digits as its factorization.

1227069615977 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20003760, while the sum is 62.

The spelling of 1227069615977 in words is "one trillion, two hundred twenty-seven billion, sixty-nine million, six hundred fifteen thousand, nine hundred seventy-seven".