30456505661 has 8 divisors (see below), whose sum is σ = 30793057848. Its totient is φ = 30120640000.

The previous prime is 30456505577. The next prime is 30456505679. The reversal of 30456505661 is 16650565403.

It can be written as a sum of positive squares in 4 ways, for example, as 16947092761 + 13509412900 = 130181^2 + 116230^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 30456505661 - 2²⁶ = 30389396797 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 (30456501661) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 82160 + ... + 260121.

It is an arithmetic number, because the mean of its divisors is an integer number (3849132231).

Almost surely, 2^30456505661 is an apocalyptic number.

It is an amenable number.

30456505661 is a deficient number, since it is larger than the sum of its proper divisors (336552187).

30456505661 is a wasteful number, since it uses less digits than its factorization.

30456505661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 343263.

The product of its (nonzero) digits is 324000, while the sum is 41.

The spelling of 30456505661 in words is "thirty billion, four hundred fifty-six million, five hundred five thousand, six hundred sixty-one".