30055537520 has 40 divisors (see below), whose sum is σ = 69901418880. Its totient is φ = 12018379520.

The previous prime is 30055537513. The next prime is 30055537529. The reversal of 30055537520 is 2573555003.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×30055537520² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30055537529) 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, 199361 + ... + 315999.

It is an arithmetic number, because the mean of its divisors is an integer number (1747535472).

Almost surely, 2^30055537520 is an apocalyptic number.

It is an amenable number.

30055537520 is an abundant number, since it is smaller than the sum of its proper divisors (39845881360).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

30055537520 is a wasteful number, since it uses less digits than its factorization.

30055537520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119873 (or 119867 counting only the distinct ones).

The product of its (nonzero) digits is 78750, while the sum is 35.

The spelling of 30055537520 in words is "thirty billion, fifty-five million, five hundred thirty-seven thousand, five hundred twenty".