30521075949 has 144 divisors (see below), whose sum is σ = 56490994560. Its totient is φ = 15735202560.

The previous prime is 30521075929. The next prime is 30521075957. The reversal of 30521075949 is 94957012503.

It is a happy number.

30521075949 is a `hidden beast` number, since 3 + 0 + 52 + 1 + 0 + 7 + 594 + 9 = 666.

It is not a de Polignac number, because 30521075949 - 2⁵ = 30521075917 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30521075929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 69523872 + ... + 69524310.

Almost surely, 2^30521075949 is an apocalyptic number.

30521075949 is a gapful number since it is divisible by the number (39) formed by its first and last digit.

It is an amenable number.

30521075949 is a deficient number, since it is larger than the sum of its proper divisors (25969918611).

30521075949 is a wasteful number, since it uses less digits than its factorization.

30521075949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 720 (or 710 counting only the distinct ones).

The product of its (nonzero) digits is 340200, while the sum is 45.

The spelling of 30521075949 in words is "thirty billion, five hundred twenty-one million, seventy-five thousand, nine hundred forty-nine".