30649023521 has 2 divisors, whose sum is σ = 30649023522. Its totient is φ = 30649023520.

The previous prime is 30649023511. The next prime is 30649023533. The reversal of 30649023521 is 12532094603.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21657242896 + 8991780625 = 147164^2 + 94825^2 .

It is a cyclic number.

It is not a de Polignac number, because 30649023521 - 2³⁴ = 13469154337 is a prime.

It is a super-2 number, since 2×30649023521² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (30649023511) by changing a digit.

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 as a sum of consecutive naturals, namely, 15324511760 + 15324511761.

It is an arithmetic number, because the mean of its divisors is an integer number (15324511761).

Almost surely, 2^30649023521 is an apocalyptic number.

It is an amenable number.

30649023521 is a deficient number, since it is larger than the sum of its proper divisors (1).

30649023521 is an equidigital number, since it uses as much as digits as its factorization.

30649023521 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 38880, while the sum is 35.

The spelling of 30649023521 in words is "thirty billion, six hundred forty-nine million, twenty-three thousand, five hundred twenty-one".