492721376137 has 8 divisors (see below), whose sum is σ = 521752728456. Its totient is φ = 463695328512.

The previous prime is 492721376129. The next prime is 492721376159. The reversal of 492721376137 is 731673127294.

It can be written as a sum of positive squares in 4 ways, for example, as 147704936976 + 345016439161 = 384324^2 + 587381^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 492721376137 - 2³ = 492721376129 is a prime.

It is not an unprimeable number, because it can be changed into a prime (492721376117) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1134138 + ... + 1507219.

It is an arithmetic number, because the mean of its divisors is an integer number (65219091057).

Almost surely, 2^492721376137 is an apocalyptic number.

It is an amenable number.

492721376137 is a deficient number, since it is larger than the sum of its proper divisors (29031352319).

492721376137 is a wasteful number, since it uses less digits than its factorization.

492721376137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2652347.

The product of its digits is 2667168, while the sum is 52.

The spelling of 492721376137 in words is "four hundred ninety-two billion, seven hundred twenty-one million, three hundred seventy-six thousand, one hundred thirty-seven".