30188747572 has 6 divisors (see below), whose sum is σ = 52830308258. Its totient is φ = 15094373784.

The previous prime is 30188747549. The next prime is 30188747573. The reversal of 30188747572 is 27574788103.

It can be written as a sum of positive squares in only one way, i.e., 30080046096 + 108701476 = 173436^2 + 10426^2 .

It is a super-2 number, since 2×30188747572² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30188747573) 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 as a sum of consecutive naturals, namely, 3773593443 + ... + 3773593450.

Almost surely, 2^30188747572 is an apocalyptic number.

It is an amenable number.

30188747572 is a deficient number, since it is larger than the sum of its proper divisors (22641560686).

30188747572 is a wasteful number, since it uses less digits than its factorization.

30188747572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7547186897 (or 7547186895 counting only the distinct ones).

The product of its (nonzero) digits is 2634240, while the sum is 52.

The spelling of 30188747572 in words is "thirty billion, one hundred eighty-eight million, seven hundred forty-seven thousand, five hundred seventy-two".