1100620645309 has 2 divisors, whose sum is σ = 1100620645310. Its totient is φ = 1100620645308.

The previous prime is 1100620645307. The next prime is 1100620645357. The reversal of 1100620645309 is 9035460260011.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 707748673284 + 392871972025 = 841278^2 + 626795^2 .

It is a cyclic number.

It is not a de Polignac number, because 1100620645309 - 2¹ = 1100620645307 is a prime.

It is a super-2 number, since 2×1100620645309² (a number of 25 digits) contains 22 as substring.

Together with 1100620645307, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1100620645307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 550310322654 + 550310322655.

It is an arithmetic number, because the mean of its divisors is an integer number (550310322655).

Almost surely, 2^{1100620645309} is an apocalyptic number.

It is an amenable number.

1100620645309 is a deficient number, since it is larger than the sum of its proper divisors (1).

1100620645309 is an equidigital number, since it uses as much as digits as its factorization.

1100620645309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 38880, while the sum is 37.

The spelling of 1100620645309 in words is "one trillion, one hundred billion, six hundred twenty million, six hundred forty-five thousand, three hundred nine".