109881782620388 has 6 divisors (see below), whose sum is σ = 192293119585686. Its totient is φ = 54940891310192.

The previous prime is 109881782620339. The next prime is 109881782620391. The reversal of 109881782620388 is 883026287188901.

It can be written as a sum of positive squares in only one way, i.e., 75419810753764 + 34461971866624 = 8684458^2 + 5870432^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13735222827545 + ... + 13735222827552.

It is an arithmetic number, because the mean of its divisors is an integer number (32048853264281).

Almost surely, 2^{109881782620388} is an apocalyptic number.

It is an amenable number.

109881782620388 is a deficient number, since it is larger than the sum of its proper divisors (82411336965298).

109881782620388 is a wasteful number, since it uses less digits than its factorization.

109881782620388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27470445655101 (or 27470445655099 counting only the distinct ones).

The product of its (nonzero) digits is 148635648, while the sum is 71.

The spelling of 109881782620388 in words is "one hundred nine trillion, eight hundred eighty-one billion, seven hundred eighty-two million, six hundred twenty thousand, three hundred eighty-eight".