30551442517 has 4 divisors (see below), whose sum is σ = 30571989696. Its totient is φ = 30530895340.

The previous prime is 30551442491. The next prime is 30551442533. The reversal of 30551442517 is 71524415503.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30551442517 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30551442587) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10271359 + ... + 10274332.

It is an arithmetic number, because the mean of its divisors is an integer number (7642997424).

Almost surely, 2^30551442517 is an apocalyptic number.

It is an amenable number.

30551442517 is a deficient number, since it is larger than the sum of its proper divisors (20547179).

30551442517 is a wasteful number, since it uses less digits than its factorization.

30551442517 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20547178.

The product of its (nonzero) digits is 84000, while the sum is 37.

The spelling of 30551442517 in words is "thirty billion, five hundred fifty-one million, four hundred forty-two thousand, five hundred seventeen".