109881782620389 has 16 divisors (see below), whose sum is σ = 175309966574400. Its totient is φ = 67619558535408.

The previous prime is 109881782620339. The next prime is 109881782620391. The reversal of 109881782620389 is 983026287188901.

109881782620389 is a `hidden beast` number, since 1 + 0 + 98 + 81 + 7 + 82 + 6 + 2 + 0 + 389 = 666.

It is not a de Polignac number, because 109881782620389 - 2¹¹ = 109881782618341 is a prime.

It is a super-2 number, since 2×109881782620389² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109881782620319) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 156526755519 + ... + 156526756220.

It is an arithmetic number, because the mean of its divisors is an integer number (10956872910900).

Almost surely, 2^{109881782620389} is an apocalyptic number.

It is an amenable number.

109881782620389 is a deficient number, since it is larger than the sum of its proper divisors (65428183954011).

109881782620389 is a wasteful number, since it uses less digits than its factorization.

109881782620389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 313053511761 (or 313053511755 counting only the distinct ones).

The product of its (nonzero) digits is 167215104, while the sum is 72.

The spelling of 109881782620389 in words is "one hundred nine trillion, eight hundred eighty-one billion, seven hundred eighty-two million, six hundred twenty thousand, three hundred eighty-nine".