140369366281 has 9 divisors (see below), whose sum is σ = 143726182119. Its totient is φ = 137089226736.

The previous prime is 140369366257. The next prime is 140369366303. The reversal of 140369366281 is 182663963041.

It is a happy number.

The square root of 140369366281 is 374659.

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., 136275414025 + 4093952256 = 369155^2 + 63984^2 .

It is not a de Polignac number, because 140369366281 - 2¹⁹ = 140368841993 is a prime.

It is a super-2 number, since 2×140369366281² (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 (140369366251) 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, 16105981 + ... + 16114693.

It is an arithmetic number, because the mean of its divisors is an integer number (15969575791).

Almost surely, 2^140369366281 is an apocalyptic number.

140369366281 is the 374659-th square number.

140369366281 is the 187330-th centered octagonal number.

It is an amenable number.

140369366281 is a deficient number, since it is larger than the sum of its proper divisors (3356815838).

140369366281 is an frugal number, since it uses more digits than its factorization.

140369366281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17512 (or 8756 counting only the distinct ones).

The product of its (nonzero) digits is 1119744, while the sum is 49.

Multiplying 140369366281 by its sum of digits (49), we get a square (6878098947769 = 2622613²).

The spelling of 140369366281 in words is "one hundred forty billion, three hundred sixty-nine million, three hundred sixty-six thousand, two hundred eighty-one".