65610583072 has 12 divisors (see below), whose sum is σ = 129170835486. Its totient is φ = 32805291520.

The previous prime is 65610583067. The next prime is 65610583109. The reversal of 65610583072 is 27038501656.

It can be written as a sum of positive squares in only one way, i.e., 35613728656 + 29996854416 = 188716^2 + 173196^2 .

It is a super-2 number, since 2×65610583072² (a number of 22 digits) contains 22 as substring.

It is an alternating number because its digits alternate between even and odd.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1025165329 + ... + 1025165392.

Almost surely, 2^65610583072 is an apocalyptic number.

It is an amenable number.

65610583072 is a deficient number, since it is larger than the sum of its proper divisors (63560252414).

65610583072 is a wasteful number, since it uses less digits than its factorization.

65610583072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2050330731 (or 2050330723 counting only the distinct ones).

The product of its (nonzero) digits is 302400, while the sum is 43.

The spelling of 65610583072 in words is "sixty-five billion, six hundred ten million, five hundred eighty-three thousand, seventy-two".