30512015004 has 48 divisors (see below), whose sum is σ = 78660142848. Its totient is φ = 9156204288.

The previous prime is 30512014999. The next prime is 30512015071. The reversal of 30512015004 is 40051021503.

It is a super-2 number, since 2×30512015004² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3246802 + ... + 3256185.

It is an arithmetic number, because the mean of its divisors is an integer number (1638752976).

Almost surely, 2^30512015004 is an apocalyptic number.

30512015004 is a gapful number since it is divisible by the number (34) formed by its first and last digit.

It is an amenable number.

30512015004 is an abundant number, since it is smaller than the sum of its proper divisors (48148127844).

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

30512015004 is a wasteful number, since it uses less digits than its factorization.

30512015004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6503034 (or 6503032 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 21.

Adding to 30512015004 its reverse (40051021503), we get a palindrome (70563036507).

The spelling of 30512015004 in words is "thirty billion, five hundred twelve million, fifteen thousand, four".