12651345546 has 64 divisors (see below), whose sum is σ = 30990256128. Its totient is φ = 3364054848.

The previous prime is 12651345533. The next prime is 12651345589. The reversal of 12651345546 is 64554315621.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 12651345498 and 12651345507.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 141240 + ... + 212723.

It is an arithmetic number, because the mean of its divisors is an integer number (484222752).

Almost surely, 2^12651345546 is an apocalyptic number.

12651345546 is an abundant number, since it is smaller than the sum of its proper divisors (18338910582).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12651345546 is a wasteful number, since it uses less digits than its factorization.

12651345546 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 354035.

The product of its digits is 432000, while the sum is 42.

The spelling of 12651345546 in words is "twelve billion, six hundred fifty-one million, three hundred forty-five thousand, five hundred forty-six".