30520415303255 has 4 divisors (see below), whose sum is σ = 36624498363912. Its totient is φ = 24416332242600.

The previous prime is 30520415303251. The next prime is 30520415303309. The reversal of 30520415303255 is 55230351402503.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 30520415303255 - 2² = 30520415303251 is a prime.

It is a super-2 number, since 2×30520415303255² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30520415303251) 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, 3052041530321 + ... + 3052041530330.

It is an arithmetic number, because the mean of its divisors is an integer number (9156124590978).

Almost surely, 2^{30520415303255} is an apocalyptic number.

30520415303255 is a deficient number, since it is larger than the sum of its proper divisors (6104083060657).

30520415303255 is an equidigital number, since it uses as much as digits as its factorization.

30520415303255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6104083060656.

The product of its (nonzero) digits is 270000, while the sum is 38.

Adding to 30520415303255 its reverse (55230351402503), we get a palindrome (85750766705758).

The spelling of 30520415303255 in words is "thirty trillion, five hundred twenty billion, four hundred fifteen million, three hundred three thousand, two hundred fifty-five".