30639393970 has 16 divisors (see below), whose sum is σ = 55849023360. Its totient is φ = 12100621104.

The previous prime is 30639393959. The next prime is 30639393979. The reversal of 30639393970 is 7939393603.

It is not an unprimeable number, because it can be changed into a prime (30639393979) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19391232 + ... + 19392811.

It is an arithmetic number, because the mean of its divisors is an integer number (3490563960).

Almost surely, 2^30639393970 is an apocalyptic number.

30639393970 is a deficient number, since it is larger than the sum of its proper divisors (25209629390).

30639393970 is a wasteful number, since it uses less digits than its factorization.

30639393970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38784129.

The product of its (nonzero) digits is 2480058, while the sum is 52.

The spelling of 30639393970 in words is "thirty billion, six hundred thirty-nine million, three hundred ninety-three thousand, nine hundred seventy".