780730030081 has 8 divisors (see below), whose sum is σ = 791471147400. Its totient is φ = 770032665600.

The previous prime is 780730030043. The next prime is 780730030121. The reversal of 780730030081 is 180030037087.

It can be written as a sum of positive squares in 4 ways, for example, as 519285978225 + 261444051856 = 720615^2 + 511316^2 .

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 780730030081 - 2¹³ = 780730021889 is a prime.

It is a super-2 number, since 2×780730030081² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 780730030081.

It is not an unprimeable number, because it can be changed into a prime (780730030001) 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 7 ways as a sum of consecutive naturals, for example, 10902276 + ... + 10973653.

It is an arithmetic number, because the mean of its divisors is an integer number (98933893425).

Almost surely, 2^780730030081 is an apocalyptic number.

It is an amenable number.

780730030081 is a deficient number, since it is larger than the sum of its proper divisors (10741117319).

780730030081 is a wasteful number, since it uses less digits than its factorization.

780730030081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21876419.

The product of its (nonzero) digits is 28224, while the sum is 37.

The spelling of 780730030081 in words is "seven hundred eighty billion, seven hundred thirty million, thirty thousand, eighty-one".