1101947370409 has 2 divisors, whose sum is σ = 1101947370410. Its totient is φ = 1101947370408.

The previous prime is 1101947370373. The next prime is 1101947370413. The reversal of 1101947370409 is 9040737491011.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 887499653184 + 214447717225 = 942072^2 + 463085^2 .

It is a cyclic number.

It is not a de Polignac number, because 1101947370409 - 2²¹ = 1101945273257 is a prime.

It is not a weakly prime, because it can be changed into another prime (1101947373409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 550973685204 + 550973685205.

It is an arithmetic number, because the mean of its divisors is an integer number (550973685205).

Almost surely, 2^{1101947370409} is an apocalyptic number.

It is an amenable number.

1101947370409 is a deficient number, since it is larger than the sum of its proper divisors (1).

1101947370409 is an equidigital number, since it uses as much as digits as its factorization.

1101947370409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 190512, while the sum is 46.

The spelling of 1101947370409 in words is "one trillion, one hundred one billion, nine hundred forty-seven million, three hundred seventy thousand, four hundred nine".