65660061506 has 48 divisors (see below), whose sum is σ = 108368225568. Its totient is φ = 29817216000.

The previous prime is 65660061499. The next prime is 65660061517. The reversal of 65660061506 is 60516006656.

It is a super-2 number, since 2×65660061506² (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 36255341 + ... + 36257151.

It is an arithmetic number, because the mean of its divisors is an integer number (2257671366).

Almost surely, 2^65660061506 is an apocalyptic number.

65660061506 is a deficient number, since it is larger than the sum of its proper divisors (42708164062).

65660061506 is a wasteful number, since it uses less digits than its factorization.

65660061506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3507 (or 3494 counting only the distinct ones).

The product of its (nonzero) digits is 194400, while the sum is 41.

The spelling of 65660061506 in words is "sixty-five billion, six hundred sixty million, sixty-one thousand, five hundred six".