139226743161 has 45 divisors (see below), whose sum is σ = 228667545183. Its totient is φ = 84357456480.

The previous prime is 139226743151. The next prime is 139226743171. The reversal of 139226743161 is 161347622931.

The square root of 139226743161 is 373131.

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

139226743161 is a `hidden beast` number, since 1 + 392 + 2 + 67 + 43 + 161 = 666.

It is an interprime number because it is at equal distance from previous prime (139226743151) and next prime (139226743171).

It can be written as a sum of positive squares in only one way, i.e., 115375029561 + 23851713600 = 339669^2 + 154440^2 .

It is not a de Polignac number, because 139226743161 - 2¹¹ = 139226741113 is a prime.

It is a super-2 number, since 2×139226743161² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (139226743121) 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 44 ways as a sum of consecutive naturals, for example, 36938085 + ... + 36941853.

Almost surely, 2^139226743161 is an apocalyptic number.

139226743161 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

139226743161 is the 373131-st square number.

139226743161 is the 186566-th centered octagonal number.

It is an amenable number.

139226743161 is a deficient number, since it is larger than the sum of its proper divisors (89440802022).

139226743161 is an frugal number, since it uses more digits than its factorization.

139226743161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7572 (or 3783 counting only the distinct ones).

The product of its digits is 326592, while the sum is 45.

The spelling of 139226743161 in words is "one hundred thirty-nine billion, two hundred twenty-six million, seven hundred forty-three thousand, one hundred sixty-one".