140187565446889 has 9 divisors (see below), whose sum is σ = 141301611831447. Its totient is φ = 139082234498424.

The previous prime is 140187565446871. The next prime is 140187565446949. The reversal of 140187565446889 is 988644565781041.

The square root of 140187565446889 is 11840083.

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

It can be written as a sum of positive squares in only one way, i.e., 128272227987289 + 11915337459600 = 11325733^2 + 3451860^2 .

It is not a de Polignac number, because 140187565446889 - 2¹¹ = 140187565444841 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (140187565446839) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1503643927 + ... + 1503737155.

It is an arithmetic number, because the mean of its divisors is an integer number (15700179092383).

Almost surely, 2^{140187565446889} is an apocalyptic number.

140187565446889 is the 11840083-rd square number.

140187565446889 is the 5920042-nd centered octagonal number.

It is an amenable number.

140187565446889 is a deficient number, since it is larger than the sum of its proper divisors (1114046384558).

140187565446889 is an frugal number, since it uses more digits than its factorization.

140187565446889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186712 (or 93356 counting only the distinct ones).

The product of its (nonzero) digits is 1857945600, while the sum is 76.

The spelling of 140187565446889 in words is "one hundred forty trillion, one hundred eighty-seven billion, five hundred sixty-five million, four hundred forty-six thousand, eight hundred eighty-nine".