12630078385 has 16 divisors (see below), whose sum is σ = 15235983360. Its totient is φ = 10050889600.

The previous prime is 12630078371. The next prime is 12630078437. The reversal of 12630078385 is 58387003621.

It is not a de Polignac number, because 12630078385 - 2¹⁹ = 12629554097 is a prime.

It is a super-2 number, since 2×12630078385² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1336206 + ... + 1345624.

It is an arithmetic number, because the mean of its divisors is an integer number (952248960).

Almost surely, 2^12630078385 is an apocalyptic number.

It is an amenable number.

12630078385 is a deficient number, since it is larger than the sum of its proper divisors (2605904975).

12630078385 is a wasteful number, since it uses less digits than its factorization.

12630078385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10808.

The product of its (nonzero) digits is 241920, while the sum is 43.

The spelling of 12630078385 in words is "twelve billion, six hundred thirty million, seventy-eight thousand, three hundred eighty-five".