12135730378 has 16 divisors (see below), whose sum is σ = 18280703520. Its totient is φ = 6042207600.

The previous prime is 12135730349. The next prime is 12135730379. The reversal of 12135730378 is 87303753121.

It is a self number, because there is not a number n which added to its sum of digits gives 12135730378.

It is not an unprimeable number, because it can be changed into a prime (12135730379) 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, 557988 + ... + 579328.

It is an arithmetic number, because the mean of its divisors is an integer number (1142543970).

Almost surely, 2^12135730378 is an apocalyptic number.

12135730378 is a deficient number, since it is larger than the sum of its proper divisors (6144973142).

12135730378 is a wasteful number, since it uses less digits than its factorization.

12135730378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22533.

The product of its (nonzero) digits is 105840, while the sum is 40.

The spelling of 12135730378 in words is "twelve billion, one hundred thirty-five million, seven hundred thirty thousand, three hundred seventy-eight".