49731172316281 has 4 divisors (see below), whose sum is σ = 50005930174564. Its totient is φ = 49456414458000.

The previous prime is 49731172316261. The next prime is 49731172316297. The reversal of 49731172316281 is 18261327113794.

49731172316281 = 4986540² + 4986541².

It is the 2878981-st star number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 24865581171600 + 24865591144681 = 4986540^2 + 4986541^2 .

It is a cyclic number.

It is not a de Polignac number, because 49731172316281 - 2²⁵ = 49731138761849 is a prime.

It is a super-2 number, since 2×49731172316281² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (49731172316261) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 137378928870 + ... + 137378929231.

It is an arithmetic number, because the mean of its divisors is an integer number (12501482543641).

Almost surely, 2^{49731172316281} is an apocalyptic number.

49731172316281 is the 4986541-st centered square number.

It is an amenable number.

49731172316281 is a deficient number, since it is larger than the sum of its proper divisors (274757858283).

49731172316281 is a wasteful number, since it uses less digits than its factorization.

49731172316281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 274757858282.

The product of its digits is 3048192, while the sum is 55.

The spelling of 49731172316281 in words is "forty-nine trillion, seven hundred thirty-one billion, one hundred seventy-two million, three hundred sixteen thousand, two hundred eighty-one".