30542044661 has 4 divisors (see below), whose sum is σ = 30542394924. Its totient is φ = 30541694400.

The previous prime is 30542044651. The next prime is 30542044667. The reversal of 30542044661 is 16644024503.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 16644024503 = 3049 ⋅5458847.

It can be written as a sum of positive squares in 2 ways, for example, as 2084379025 + 28457665636 = 45655^2 + 168694^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30542044661 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30542044667) 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, 70541 + ... + 257021.

It is an arithmetic number, because the mean of its divisors is an integer number (7635598731).

Almost surely, 2^30542044661 is an apocalyptic number.

It is an amenable number.

30542044661 is a deficient number, since it is larger than the sum of its proper divisors (350263).

30542044661 is a wasteful number, since it uses less digits than its factorization.

30542044661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 350262.

The product of its (nonzero) digits is 69120, while the sum is 35.

The spelling of 30542044661 in words is "thirty billion, five hundred forty-two million, forty-four thousand, six hundred sixty-one".