65128494950 has 12 divisors (see below), whose sum is σ = 121139000700. Its totient is φ = 26051397960.

The previous prime is 65128494947. The next prime is 65128494971. The reversal of 65128494950 is 5949482156.

It is a junction number, because it is equal to n+sod(n) for n = 65128494892 and 65128494901.

It is a congruent number.

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, 651284900 + ... + 651284999.

It is an arithmetic number, because the mean of its divisors is an integer number (10094916725).

Almost surely, 2^65128494950 is an apocalyptic number.

65128494950 is a deficient number, since it is larger than the sum of its proper divisors (56010505750).

65128494950 is a wasteful number, since it uses less digits than its factorization.

65128494950 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1302569911 (or 1302569906 counting only the distinct ones).

The product of its (nonzero) digits is 3110400, while the sum is 53.

The spelling of 65128494950 in words is "sixty-five billion, one hundred twenty-eight million, four hundred ninety-four thousand, nine hundred fifty".