726731820130 has 8 divisors (see below), whose sum is σ = 1308117276252. Its totient is φ = 290692728048.

The previous prime is 726731820119. The next prime is 726731820137. The reversal of 726731820130 is 31028137627.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 724716797809 + 2015022321 = 851303^2 + 44889^2 .

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

It is not an unprimeable number, because it can be changed into a prime (726731820137) 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, 36336590997 + ... + 36336591016.

Almost surely, 2^726731820130 is an apocalyptic number.

726731820130 is a deficient number, since it is larger than the sum of its proper divisors (581385456122).

726731820130 is a wasteful number, since it uses less digits than its factorization.

726731820130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72673182020.

The product of its (nonzero) digits is 84672, while the sum is 40.

Adding to 726731820130 its reverse (31028137627), we get a palindrome (757759957757).

The spelling of 726731820130 in words is "seven hundred twenty-six billion, seven hundred thirty-one million, eight hundred twenty thousand, one hundred thirty".