499680041281 has 4 divisors (see below), whose sum is σ = 499692314500. Its totient is φ = 499667768064.

The previous prime is 499680041243. The next prime is 499680041309. The reversal of 499680041281 is 182140086994.

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 211140250000 + 288539791281 = 459500^2 + 537159^2 .

It is a cyclic number.

It is not a de Polignac number, because 499680041281 - 2¹³ = 499680033089 is a prime.

It is a super-2 number, since 2×499680041281² (a number of 24 digits) contains 22 as substring.

It is the 706881-st Hogben number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (499680041681) by changing a digit.

It is a nontrivial repunit in base 706880.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6075336 + ... + 6157033.

It is an arithmetic number, because the mean of its divisors is an integer number (124923078625).

Almost surely, 2^499680041281 is an apocalyptic number.

It is an amenable number.

499680041281 is a deficient number, since it is larger than the sum of its proper divisors (12273219).

499680041281 is a wasteful number, since it uses less digits than its factorization.

499680041281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12273218.

The product of its (nonzero) digits is 995328, while the sum is 52.

The spelling of 499680041281 in words is "four hundred ninety-nine billion, six hundred eighty million, forty-one thousand, two hundred eighty-one".