65887085651 has 4 divisors (see below), whose sum is σ = 65887789704. Its totient is φ = 65886381600.

The previous prime is 65887085617. The next prime is 65887085749. The reversal of 65887085651 is 15658078856.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 65887085651 - 2³⁰ = 64813343827 is a prime.

It is a super-2 number, since 2×65887085651² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65587085651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 185345 + ... + 407586.

It is an arithmetic number, because the mean of its divisors is an integer number (16471947426).

Almost surely, 2^65887085651 is an apocalyptic number.

65887085651 is a deficient number, since it is larger than the sum of its proper divisors (704053).

65887085651 is a wasteful number, since it uses less digits than its factorization.

65887085651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 704052.

The product of its (nonzero) digits is 16128000, while the sum is 59.

The spelling of 65887085651 in words is "sixty-five billion, eight hundred eighty-seven million, eighty-five thousand, six hundred fifty-one".