65609154872 has 16 divisors (see below), whose sum is σ = 123035382000. Its totient is φ = 32799719680.

The previous prime is 65609154859. The next prime is 65609154887. The reversal of 65609154872 is 27845190656.

It is a super-2 number, since 2×65609154872² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 549497 + ... + 658152.

It is an arithmetic number, because the mean of its divisors is an integer number (7689711375).

Almost surely, 2^65609154872 is an apocalyptic number.

It is an amenable number.

65609154872 is a deficient number, since it is larger than the sum of its proper divisors (57426227128).

65609154872 is a wasteful number, since it uses less digits than its factorization.

65609154872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1214446 (or 1214442 counting only the distinct ones).

The product of its (nonzero) digits is 3628800, while the sum is 53.

The spelling of 65609154872 in words is "sixty-five billion, six hundred nine million, one hundred fifty-four thousand, eight hundred seventy-two".