109019492761 has 9 divisors (see below), whose sum is σ = 112660271829. Its totient is φ = 105492829500.

The previous prime is 109019492759. The next prime is 109019492783. The reversal of 109019492761 is 167294910901.

The square root of 109019492761 is 330181.

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

It is not a de Polignac number, because 109019492761 - 2¹ = 109019492759 is a prime.

It is a super-3 number, since 3×109019492761³ (a number of 34 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (109019499761) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 10230286 + ... + 10240936.

It is an arithmetic number, because the mean of its divisors is an integer number (12517807981).

Almost surely, 2^109019492761 is an apocalyptic number.

109019492761 is the 330181-st square number.

109019492761 is the 165091-st centered octagonal number.

It is an amenable number.

109019492761 is a deficient number, since it is larger than the sum of its proper divisors (3640779068).

109019492761 is an frugal number, since it uses more digits than its factorization.

109019492761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21364 (or 10682 counting only the distinct ones).

The product of its (nonzero) digits is 244944, while the sum is 49.

Multiplying 109019492761 by its sum of digits (49), we get a square (5341955145289 = 2311267²).

The spelling of 109019492761 in words is "one hundred nine billion, nineteen million, four hundred ninety-two thousand, seven hundred sixty-one".