30461377561 has 4 divisors (see below), whose sum is σ = 30553406224. Its totient is φ = 30369348900.

The previous prime is 30461377553. The next prime is 30461377603. The reversal of 30461377561 is 16577316403.

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 30461377561 - 2³ = 30461377553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30461377061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46013835 + ... + 46014496.

It is an arithmetic number, because the mean of its divisors is an integer number (7638351556).

Almost surely, 2^30461377561 is an apocalyptic number.

It is an amenable number.

30461377561 is a deficient number, since it is larger than the sum of its proper divisors (92028663).

30461377561 is an equidigital number, since it uses as much as digits as its factorization.

30461377561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92028662.

The product of its (nonzero) digits is 317520, while the sum is 43.

The spelling of 30461377561 in words is "thirty billion, four hundred sixty-one million, three hundred seventy-seven thousand, five hundred sixty-one".