65166325651 has 16 divisors (see below), whose sum is σ = 74687021568. Its totient is φ = 55698667200.

The previous prime is 65166325639. The next prime is 65166325663. The reversal of 65166325651 is 15652366156.

It is an interprime number because it is at equal distance from previous prime (65166325639) and next prime (65166325663).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-65166325651 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65166325051) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3629386 + ... + 3647296.

It is an arithmetic number, because the mean of its divisors is an integer number (4667938848).

Almost surely, 2^65166325651 is an apocalyptic number.

65166325651 is a deficient number, since it is larger than the sum of its proper divisors (9520695917).

65166325651 is a wasteful number, since it uses less digits than its factorization.

65166325651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19362.

The product of its digits is 972000, while the sum is 46.

The spelling of 65166325651 in words is "sixty-five billion, one hundred sixty-six million, three hundred twenty-five thousand, six hundred fifty-one".