30512055521 has 8 divisors (see below), whose sum is σ = 32222578080. Its totient is φ = 28811995488.

The previous prime is 30512055449. The next prime is 30512055523. The reversal of 30512055521 is 12555021503.

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 30512055521 - 2²⁶ = 30444946657 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30512055523) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2609636 + ... + 2621301.

It is an arithmetic number, because the mean of its divisors is an integer number (4027822260).

Almost surely, 2^30512055521 is an apocalyptic number.

It is an amenable number.

30512055521 is a deficient number, since it is larger than the sum of its proper divisors (1710522559).

30512055521 is a wasteful number, since it uses less digits than its factorization.

30512055521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5231263.

The product of its (nonzero) digits is 7500, while the sum is 29.

The spelling of 30512055521 in words is "thirty billion, five hundred twelve million, fifty-five thousand, five hundred twenty-one".