30456423643 has 4 divisors (see below), whose sum is σ = 30484443520. Its totient is φ = 30428403768.

The previous prime is 30456423631. The next prime is 30456423677. The reversal of 30456423643 is 34632465403.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30456423643 is a prime.

It is a super-2 number, since 2×30456423643² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30456423596 and 30456423605.

It is not an unprimeable number, because it can be changed into a prime (30456423743) 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, 14008308 + ... + 14010481.

It is an arithmetic number, because the mean of its divisors is an integer number (7621110880).

Almost surely, 2^30456423643 is an apocalyptic number.

30456423643 is a deficient number, since it is larger than the sum of its proper divisors (28019877).

30456423643 is a wasteful number, since it uses less digits than its factorization.

30456423643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28019876.

The product of its (nonzero) digits is 622080, while the sum is 40.

The spelling of 30456423643 in words is "thirty billion, four hundred fifty-six million, four hundred twenty-three thousand, six hundred forty-three".