30121185378 has 32 divisors (see below), whose sum is σ = 65341805760. Its totient is φ = 9219299840.

The previous prime is 30121185373. The next prime is 30121185389. The reversal of 30121185378 is 87358112103.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (30121185373) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3597108 + ... + 3605471.

It is an arithmetic number, because the mean of its divisors is an integer number (2041931430).

Almost surely, 2^30121185378 is an apocalyptic number.

30121185378 is an abundant number, since it is smaller than the sum of its proper divisors (35220620382).

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

30121185378 is a wasteful number, since it uses less digits than its factorization.

30121185378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7202642.

The product of its (nonzero) digits is 40320, while the sum is 39.

The spelling of 30121185378 in words is "thirty billion, one hundred twenty-one million, one hundred eighty-five thousand, three hundred seventy-eight".