12129044570 has 16 divisors (see below), whose sum is σ = 23116532328. Its totient is φ = 4566228480.

The previous prime is 12129044569. The next prime is 12129044581. The reversal of 12129044570 is 7544092121.

It can be written as a sum of positive squares in 4 ways, for example, as 11868577249 + 260467321 = 108943^2 + 16139^2 .

It is a super-2 number, since 2×12129044570² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12129044570.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35673491 + ... + 35673830.

Almost surely, 2^12129044570 is an apocalyptic number.

12129044570 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12129044570 is a deficient number, since it is larger than the sum of its proper divisors (10987487758).

12129044570 is a wasteful number, since it uses less digits than its factorization.

12129044570 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71347345.

The product of its (nonzero) digits is 20160, while the sum is 35.

The spelling of 12129044570 in words is "twelve billion, one hundred twenty-nine million, forty-four thousand, five hundred seventy".