109645649513187 has 32 divisors (see below), whose sum is σ = 155292397221888. Its totient is φ = 68575708670976.

The previous prime is 109645649513177. The next prime is 109645649513207. The reversal of 109645649513187 is 781315946546901.

It is not a de Polignac number, because 109645649513187 - 2¹⁹ = 109645648988899 is a prime.

It is a super-2 number, since 2×109645649513187² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (109645649513177) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 924884838 + ... + 925003380.

It is an arithmetic number, because the mean of its divisors is an integer number (4852887413184).

Almost surely, 2^{109645649513187} is an apocalyptic number.

109645649513187 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

109645649513187 is a deficient number, since it is larger than the sum of its proper divisors (45646747708701).

109645649513187 is a wasteful number, since it uses less digits than its factorization.

109645649513187 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176819.

The product of its (nonzero) digits is 195955200, while the sum is 69.

The spelling of 109645649513187 in words is "one hundred nine trillion, six hundred forty-five billion, six hundred forty-nine million, five hundred thirteen thousand, one hundred eighty-seven".