1099871970049 has 2 divisors, whose sum is σ = 1099871970050. Its totient is φ = 1099871970048.

The previous prime is 1099871969953. The next prime is 1099871970073. The reversal of 1099871970049 is 9400791789901.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1054024595649 + 45847374400 = 1026657^2 + 214120^2 .

It is a cyclic number.

It is not a de Polignac number, because 1099871970049 - 2²⁵ = 1099838415617 is a prime.

It is not a weakly prime, because it can be changed into another prime (1099871070049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 549935985024 + 549935985025.

It is an arithmetic number, because the mean of its divisors is an integer number (549935985025).

Almost surely, 2^{1099871970049} is an apocalyptic number.

It is an amenable number.

1099871970049 is a deficient number, since it is larger than the sum of its proper divisors (1).

1099871970049 is an equidigital number, since it uses as much as digits as its factorization.

1099871970049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10287648, while the sum is 64.

The spelling of 1099871970049 in words is "one trillion, ninety-nine billion, eight hundred seventy-one million, nine hundred seventy thousand, forty-nine".