30472643503 has 4 divisors (see below), whose sum is σ = 30473822848. Its totient is φ = 30471464160.

The previous prime is 30472643447. The next prime is 30472643507. The reversal of 30472643503 is 30534627403.

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

It is a cyclic number.

It is not a de Polignac number, because 30472643503 - 2¹³ = 30472635311 is a prime.

It is a super-2 number, since 2×30472643503² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30472643507) 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, 550026 + ... + 602887.

It is an arithmetic number, because the mean of its divisors is an integer number (7618455712).

Almost surely, 2^30472643503 is an apocalyptic number.

30472643503 is a deficient number, since it is larger than the sum of its proper divisors (1179345).

30472643503 is a wasteful number, since it uses less digits than its factorization.

30472643503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1179344.

The product of its (nonzero) digits is 181440, while the sum is 37.

The spelling of 30472643503 in words is "thirty billion, four hundred seventy-two million, six hundred forty-three thousand, five hundred three".