12605487772 has 6 divisors (see below), whose sum is σ = 22059603608. Its totient is φ = 6302743884.

The previous prime is 12605487731. The next prime is 12605487781. The reversal of 12605487772 is 27778450621.

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, 1575685968 + ... + 1575685975.

Almost surely, 2^12605487772 is an apocalyptic number.

It is an amenable number.

12605487772 is a deficient number, since it is larger than the sum of its proper divisors (9454115836).

12605487772 is a wasteful number, since it uses less digits than its factorization.

12605487772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3151371947 (or 3151371945 counting only the distinct ones).

The product of its (nonzero) digits is 1317120, while the sum is 49.

The spelling of 12605487772 in words is "twelve billion, six hundred five million, four hundred eighty-seven thousand, seven hundred seventy-two".