65121255652 has 24 divisors (see below), whose sum is σ = 120384135200. Its totient is φ = 30737900736.

The previous prime is 65121255637. The next prime is 65121255653. The reversal of 65121255652 is 25655212156.

It is not an unprimeable number, because it can be changed into a prime (65121255653) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1492377 + ... + 1535392.

Almost surely, 2^65121255652 is an apocalyptic number.

It is an amenable number.

65121255652 is a deficient number, since it is larger than the sum of its proper divisors (55262879548).

65121255652 is a wasteful number, since it uses less digits than its factorization.

65121255652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3028075 (or 3028073 counting only the distinct ones).

The product of its digits is 180000, while the sum is 40.

The spelling of 65121255652 in words is "sixty-five billion, one hundred twenty-one million, two hundred fifty-five thousand, six hundred fifty-two".