109647739161 has 27 divisors (see below), whose sum is σ = 165600059989. Its totient is φ = 69905727672.

The previous prime is 109647739129. The next prime is 109647739177. The reversal of 109647739161 is 161937746901.

The square root of 109647739161 is 331131.

It is a perfect power (a square), and thus also a powerful number.

109647739161 is a `hidden beast` number, since 1 + 0 + 9 + 6 + 477 + 3 + 9 + 161 = 666.

It is not a de Polignac number, because 109647739161 - 2⁵ = 109647739129 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 109647739098 and 109647739107.

It is not an unprimeable number, because it can be changed into a prime (109647739121) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 22845640 + ... + 22850438.

Almost surely, 2^109647739161 is an apocalyptic number.

109647739161 is the 331131-st square number.

109647739161 is the 165566-th centered octagonal number.

It is an amenable number.

109647739161 is a deficient number, since it is larger than the sum of its proper divisors (55952320828).

109647739161 is an frugal number, since it uses more digits than its factorization.

109647739161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9650 (or 4825 counting only the distinct ones).

The product of its (nonzero) digits is 1714608, while the sum is 54.

The spelling of 109647739161 in words is "one hundred nine billion, six hundred forty-seven million, seven hundred thirty-nine thousand, one hundred sixty-one".