30778705100 has 72 divisors (see below), whose sum is σ = 78466363248. Its totient is φ = 10331308800.

The previous prime is 30778705099. The next prime is 30778705103. The reversal of 30778705100 is 150787703.

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (30778705103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1061879 + ... + 1090478.

Almost surely, 2^30778705100 is an apocalyptic number.

It is an amenable number.

30778705100 is an abundant number, since it is smaller than the sum of its proper divisors (47687658148).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

30778705100 is a wasteful number, since it uses less digits than its factorization.

30778705100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2152395 (or 2152388 counting only the distinct ones).

The product of its (nonzero) digits is 41160, while the sum is 38.

The spelling of 30778705100 in words is "thirty billion, seven hundred seventy-eight million, seven hundred five thousand, one hundred".