30542653561 has 4 divisors (see below), whose sum is σ = 34905889792. Its totient is φ = 26179417332.

The previous prime is 30542653553. The next prime is 30542653607. The reversal of 30542653561 is 16535624503.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 30542653561 - 2³ = 30542653553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30542653541) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2181618105 + ... + 2181618118.

It is an arithmetic number, because the mean of its divisors is an integer number (8726472448).

Almost surely, 2^30542653561 is an apocalyptic number.

It is an amenable number.

30542653561 is a deficient number, since it is larger than the sum of its proper divisors (4363236231).

30542653561 is an equidigital number, since it uses as much as digits as its factorization.

30542653561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4363236230.

The product of its (nonzero) digits is 324000, while the sum is 40.

The spelling of 30542653561 in words is "thirty billion, five hundred forty-two million, six hundred fifty-three thousand, five hundred sixty-one".