109749691847 has 2 divisors, whose sum is σ = 109749691848. Its totient is φ = 109749691846.

The previous prime is 109749691763. The next prime is 109749691879. The reversal of 109749691847 is 748196947901.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-109749691847 is a prime.

It is a super-2 number, since 2×109749691847² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (109749697847) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54874845923 + 54874845924.

It is an arithmetic number, because the mean of its divisors is an integer number (54874845924).

Almost surely, 2^109749691847 is an apocalyptic number.

109749691847 is a deficient number, since it is larger than the sum of its proper divisors (1).

109749691847 is an equidigital number, since it uses as much as digits as its factorization.

109749691847 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27433728, while the sum is 65.

The spelling of 109749691847 in words is "one hundred nine billion, seven hundred forty-nine million, six hundred ninety-one thousand, eight hundred forty-seven".