140280960681 has 9 divisors (see below), whose sum is σ = 202629677341. Its totient is φ = 93519891372.

The previous prime is 140280960653. The next prime is 140280960691. The reversal of 140280960681 is 186069082041.

The square root of 140280960681 is 374541.

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

140280960681 is a `hidden beast` number, since 1 + 402 + 80 + 96 + 0 + 6 + 81 = 666.

It is a tau number, because it is divible by the number of its divisors (9).

It is a de Polignac number, because none of the positive numbers 2^k-140280960681 is a prime.

It is a super-2 number, since 2×140280960681² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (140280960691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1061200 + ... + 1186046.

Almost surely, 2^140280960681 is an apocalyptic number.

140280960681 is the 374541-st square number.

140280960681 is the 187271-st centered octagonal number.

It is an amenable number.

140280960681 is a deficient number, since it is larger than the sum of its proper divisors (62348716660).

140280960681 is an frugal number, since it uses more digits than its factorization.

140280960681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 249700 (or 124850 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 45.

The spelling of 140280960681 in words is "one hundred forty billion, two hundred eighty million, nine hundred sixty thousand, six hundred eighty-one".