30450744647 has 4 divisors (see below), whose sum is σ = 30608520720. Its totient is φ = 30292968576.

The previous prime is 30450744613. The next prime is 30450744673. The reversal of 30450744647 is 74644705403.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 74644705403 = 73 ⋅1022530211.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30450744647 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30450744598 and 30450744607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30450744347) 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, 78887747 + ... + 78888132.

It is an arithmetic number, because the mean of its divisors is an integer number (7652130180).

Almost surely, 2^30450744647 is an apocalyptic number.

30450744647 is a deficient number, since it is larger than the sum of its proper divisors (157776073).

30450744647 is a wasteful number, since it uses less digits than its factorization.

30450744647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157776072.

The product of its (nonzero) digits is 1128960, while the sum is 44.

The spelling of 30450744647 in words is "thirty billion, four hundred fifty million, seven hundred forty-four thousand, six hundred forty-seven".