12346072538 has 12 divisors (see below), whose sum is σ = 18959807178. Its totient is φ = 6029475480.

The previous prime is 12346072523. The next prime is 12346072577. The reversal of 12346072538 is 83527064321.

It can be written as a sum of positive squares in only one way, i.e., 12298144609 + 47927929 = 110897^2 + 6923^2 .

It is a super-2 number, since 2×12346072538² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12346072495 and 12346072504.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1665593 + ... + 1672988.

Almost surely, 2^12346072538 is an apocalyptic number.

12346072538 is a deficient number, since it is larger than the sum of its proper divisors (6613734640).

12346072538 is an equidigital number, since it uses as much as digits as its factorization.

12346072538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3338669 (or 3338626 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 41.

The spelling of 12346072538 in words is "twelve billion, three hundred forty-six million, seventy-two thousand, five hundred thirty-eight".