1100019857977 has 2 divisors, whose sum is σ = 1100019857978. Its totient is φ = 1100019857976.

The previous prime is 1100019857969. The next prime is 1100019858037. The reversal of 1100019857977 is 7797589100011.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 764612085241 + 335407772736 = 874421^2 + 579144^2 .

It is a cyclic number.

It is not a de Polignac number, because 1100019857977 - 2³ = 1100019857969 is a prime.

It is not a weakly prime, because it can be changed into another prime (1100019857777) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 550009928988 + 550009928989.

It is an arithmetic number, because the mean of its divisors is an integer number (550009928989).

Almost surely, 2^{1100019857977} is an apocalyptic number.

It is an amenable number.

1100019857977 is a deficient number, since it is larger than the sum of its proper divisors (1).

1100019857977 is an equidigital number, since it uses as much as digits as its factorization.

1100019857977 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1111320, while the sum is 55.

The spelling of 1100019857977 in words is "one trillion, one hundred billion, nineteen million, eight hundred fifty-seven thousand, nine hundred seventy-seven".