30551420165213 has 4 divisors (see below), whose sum is σ = 30551624988060. Its totient is φ = 30551215342368.

The previous prime is 30551420165197. The next prime is 30551420165261. The reversal of 30551420165213 is 31256102415503.

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 25844026024804 + 4707394140409 = 5083702^2 + 2169653^2 .

It is a cyclic number.

It is not a de Polignac number, because 30551420165213 - 2⁴ = 30551420165197 is a prime.

It is a super-2 number, since 2×30551420165213² (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 (30551420135213) 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, 102187520 + ... + 102486057.

It is an arithmetic number, because the mean of its divisors is an integer number (7637906247015).

Almost surely, 2^{30551420165213} is an apocalyptic number.

It is an amenable number.

30551420165213 is a deficient number, since it is larger than the sum of its proper divisors (204822847).

30551420165213 is a wasteful number, since it uses less digits than its factorization.

30551420165213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204822846.

The product of its (nonzero) digits is 108000, while the sum is 38.

The spelling of 30551420165213 in words is "thirty trillion, five hundred fifty-one billion, four hundred twenty million, one hundred sixty-five thousand, two hundred thirteen".