12520045646 has 4 divisors (see below), whose sum is σ = 18780068472. Its totient is φ = 6260022822.

The previous prime is 12520045639. The next prime is 12520045691. The reversal of 12520045646 is 64654002521.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3130011410 + ... + 3130011413.

It is an arithmetic number, because the mean of its divisors is an integer number (4695017118).

Almost surely, 2^12520045646 is an apocalyptic number.

12520045646 is a deficient number, since it is larger than the sum of its proper divisors (6260022826).

12520045646 is an equidigital number, since it uses as much as digits as its factorization.

12520045646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6260022825.

The product of its (nonzero) digits is 57600, while the sum is 35.

The spelling of 12520045646 in words is "twelve billion, five hundred twenty million, forty-five thousand, six hundred forty-six".