30520917950 has 12 divisors (see below), whose sum is σ = 56768907480. Its totient is φ = 12208367160.

The previous prime is 30520917929. The next prime is 30520917961. The reversal of 30520917950 is 5971902503.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 30520917898 and 30520917907.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 305209130 + ... + 305209229.

It is an arithmetic number, because the mean of its divisors is an integer number (4730742290).

Almost surely, 2^30520917950 is an apocalyptic number.

30520917950 is a deficient number, since it is larger than the sum of its proper divisors (26247989530).

30520917950 is a wasteful number, since it uses less digits than its factorization.

30520917950 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 610418371 (or 610418366 counting only the distinct ones).

The product of its (nonzero) digits is 85050, while the sum is 41.

The spelling of 30520917950 in words is "thirty billion, five hundred twenty million, nine hundred seventeen thousand, nine hundred fifty".