30121734078 has 12 divisors (see below), whose sum is σ = 65263757208. Its totient is φ = 10040578020.

The previous prime is 30121734011. The next prime is 30121734079. The reversal of 30121734078 is 87043712103.

30121734078 is a `hidden beast` number, since 30 + 1 + 217 + 3 + 407 + 8 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30121734079) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 836714818 + ... + 836714853.

It is an arithmetic number, because the mean of its divisors is an integer number (5438646434).

Almost surely, 2^30121734078 is an apocalyptic number.

30121734078 is an abundant number, since it is smaller than the sum of its proper divisors (35142023130).

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

30121734078 is a wasteful number, since it uses less digits than its factorization.

30121734078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1673429679 (or 1673429676 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 36.

The spelling of 30121734078 in words is "thirty billion, one hundred twenty-one million, seven hundred thirty-four thousand, seventy-eight".