30378942915 has 32 divisors (see below), whose sum is σ = 50745816576. Its totient is φ = 15489661440.

The previous prime is 30378942911. The next prime is 30378942947. The reversal of 30378942915 is 51924987303.

It is not a de Polignac number, because 30378942915 - 2² = 30378942911 is a prime.

It is not an unprimeable number, because it can be changed into a prime (30378942911) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 677595 + ... + 721035.

It is an arithmetic number, because the mean of its divisors is an integer number (1585806768).

Almost surely, 2^30378942915 is an apocalyptic number.

30378942915 is a deficient number, since it is larger than the sum of its proper divisors (20366873661).

30378942915 is a wasteful number, since it uses less digits than its factorization.

30378942915 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45499.

The product of its (nonzero) digits is 1632960, while the sum is 51.

The spelling of 30378942915 in words is "thirty billion, three hundred seventy-eight million, nine hundred forty-two thousand, nine hundred fifteen".