140289749217 has 6 divisors (see below), whose sum is σ = 202640748882. Its totient is φ = 93526499472.

The previous prime is 140289749203. The next prime is 140289749221. The reversal of 140289749217 is 712947982041.

140289749217 is a `hidden beast` number, since 1 + 40 + 28 + 97 + 492 + 1 + 7 = 666.

It can be written as a sum of positive squares in only one way, i.e., 133927453521 + 6362295696 = 365961^2 + 79764^2 .

It is a de Polignac number, because none of the positive numbers 2^k-140289749217 is a prime.

It is a super-2 number, since 2×140289749217² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (140289749227) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7793874948 + ... + 7793874965.

It is an arithmetic number, because the mean of its divisors is an integer number (33773458147).

Almost surely, 2^140289749217 is an apocalyptic number.

It is an amenable number.

140289749217 is a deficient number, since it is larger than the sum of its proper divisors (62350999665).

140289749217 is a wasteful number, since it uses less digits than its factorization.

140289749217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15587749919 (or 15587749916 counting only the distinct ones).

The product of its (nonzero) digits is 2032128, while the sum is 54.

The spelling of 140289749217 in words is "one hundred forty billion, two hundred eighty-nine million, seven hundred forty-nine thousand, two hundred seventeen".