30540993421 has 2 divisors, whose sum is σ = 30540993422. Its totient is φ = 30540993420.

The previous prime is 30540993407. The next prime is 30540993449. The reversal of 30540993421 is 12439904503.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28957828900 + 1583164521 = 170170^2 + 39789^2 .

It is a cyclic number.

It is not a de Polignac number, because 30540993421 - 2⁵ = 30540993389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30540990421) 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, 15270496710 + 15270496711.

It is an arithmetic number, because the mean of its divisors is an integer number (15270496711).

Almost surely, 2^30540993421 is an apocalyptic number.

It is an amenable number.

30540993421 is a deficient number, since it is larger than the sum of its proper divisors (1).

30540993421 is an equidigital number, since it uses as much as digits as its factorization.

30540993421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 116640, while the sum is 40.

The spelling of 30540993421 in words is "thirty billion, five hundred forty million, nine hundred ninety-three thousand, four hundred twenty-one".