30278220358409 has 4 divisors (see below), whose sum is σ = 31096550638404. Its totient is φ = 29459890078416.

The previous prime is 30278220358403. The next prime is 30278220358493. The reversal of 30278220358409 is 90485302287203.

It is a happy 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 19553066953225 + 10725153405184 = 4421885^2 + 3274928^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30278220358409 is a prime.

It is a super-2 number, since 2×30278220358409² (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 (30278220358403) 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, 409165139942 + ... + 409165140015.

It is an arithmetic number, because the mean of its divisors is an integer number (7774137659601).

Almost surely, 2^{30278220358409} is an apocalyptic number.

It is an amenable number.

30278220358409 is a deficient number, since it is larger than the sum of its proper divisors (818330279995).

30278220358409 is an equidigital number, since it uses as much as digits as its factorization.

30278220358409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 818330279994.

The product of its (nonzero) digits is 5806080, while the sum is 53.

The spelling of 30278220358409 in words is "thirty trillion, two hundred seventy-eight billion, two hundred twenty million, three hundred fifty-eight thousand, four hundred nine".