30405164621 has 8 divisors (see below), whose sum is σ = 33542658744. Its totient is φ = 27381761280.

The previous prime is 30405164563. The next prime is 30405164627. The reversal of 30405164621 is 12646150403.

It can be written as a sum of positive squares in 4 ways, for example, as 1781262025 + 28623902596 = 42205^2 + 169186^2 .

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 30405164621 - 2¹⁴ = 30405148237 is a prime.

It is a super-2 number, since 2×30405164621² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30405164627) 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 7 ways as a sum of consecutive naturals, for example, 28522136 + ... + 28523201.

It is an arithmetic number, because the mean of its divisors is an integer number (4192832343).

Almost surely, 2^30405164621 is an apocalyptic number.

It is an amenable number.

30405164621 is a deficient number, since it is larger than the sum of its proper divisors (3137494123).

30405164621 is a wasteful number, since it uses less digits than its factorization.

30405164621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57045391.

The product of its (nonzero) digits is 17280, while the sum is 32.

The spelling of 30405164621 in words is "thirty billion, four hundred five million, one hundred sixty-four thousand, six hundred twenty-one".