30505774913 has 2 divisors, whose sum is σ = 30505774914. Its totient is φ = 30505774912.

The previous prime is 30505774903. The next prime is 30505774991. The reversal of 30505774913 is 31947750503.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 27495277489 + 3010497424 = 165817^2 + 54868^2 .

It is a cyclic number.

It is not a de Polignac number, because 30505774913 - 2¹⁰ = 30505773889 is a prime.

It is not a weakly prime, because it can be changed into another prime (30505774903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15252887456 + 15252887457.

It is an arithmetic number, because the mean of its divisors is an integer number (15252887457).

Almost surely, 2^30505774913 is an apocalyptic number.

It is an amenable number.

30505774913 is a deficient number, since it is larger than the sum of its proper divisors (1).

30505774913 is an equidigital number, since it uses as much as digits as its factorization.

30505774913 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 396900, while the sum is 44.

The spelling of 30505774913 in words is "thirty billion, five hundred five million, seven hundred seventy-four thousand, nine hundred thirteen".