109201927409 has 2 divisors, whose sum is σ = 109201927410. Its totient is φ = 109201927408.

The previous prime is 109201927357. The next prime is 109201927423. The reversal of 109201927409 is 904729102901.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 69350589025 + 39851338384 = 263345^2 + 199628^2 .

It is a cyclic number.

It is not a de Polignac number, because 109201927409 - 2³² = 104906960113 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 109201927409.

It is not a weakly prime, because it can be changed into another prime (109201927489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54600963704 + 54600963705.

It is an arithmetic number, because the mean of its divisors is an integer number (54600963705).

Almost surely, 2^109201927409 is an apocalyptic number.

It is an amenable number.

109201927409 is a deficient number, since it is larger than the sum of its proper divisors (1).

109201927409 is an equidigital number, since it uses as much as digits as its factorization.

109201927409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 81648, while the sum is 44.

The spelling of 109201927409 in words is "one hundred nine billion, two hundred one million, nine hundred twenty-seven thousand, four hundred nine".