30512325840 has 40 divisors (see below), whose sum is σ = 94588210848. Its totient is φ = 8136620160.

The previous prime is 30512325817. The next prime is 30512325841. The reversal of 30512325840 is 4852321503.

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

It is a super-3 number, since 3×30512325840³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30512325841) 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, 63567106 + ... + 63567585.

Almost surely, 2^30512325840 is an apocalyptic number.

30512325840 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

30512325840 is an abundant number, since it is smaller than the sum of its proper divisors (64075885008).

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

30512325840 is a wasteful number, since it uses less digits than its factorization.

30512325840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127134707 (or 127134701 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 33.

The spelling of 30512325840 in words is "thirty billion, five hundred twelve million, three hundred twenty-five thousand, eight hundred forty".