1100278077979 has 2 divisors, whose sum is σ = 1100278077980. Its totient is φ = 1100278077978.

The previous prime is 1100278077967. The next prime is 1100278078043. The reversal of 1100278077979 is 9797708720011.

It is a weak prime.

It is an emirp because it is prime and its reverse (9797708720011) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1100278077979 - 2⁵ = 1100278077947 is a prime.

It is a super-2 number, since 2×1100278077979² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1100278077949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 550139038989 + 550139038990.

It is an arithmetic number, because the mean of its divisors is an integer number (550139038990).

Almost surely, 2^{1100278077979} is an apocalyptic number.

1100278077979 is a deficient number, since it is larger than the sum of its proper divisors (1).

1100278077979 is an equidigital number, since it uses as much as digits as its factorization.

1100278077979 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3111696, while the sum is 58.

The spelling of 1100278077979 in words is "one trillion, one hundred billion, two hundred seventy-eight million, seventy-seven thousand, nine hundred seventy-nine".