65881256167 has 16 divisors (see below), whose sum is σ = 67836195520. Its totient is φ = 63935764992.

The previous prime is 65881256159. The next prime is 65881256183. The reversal of 65881256167 is 76165218856.

It is a cyclic number.

It is not a de Polignac number, because 65881256167 - 2³ = 65881256159 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65881256267) 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, 44244559 + ... + 44246047.

It is an arithmetic number, because the mean of its divisors is an integer number (4239762220).

Almost surely, 2^65881256167 is an apocalyptic number.

65881256167 is a deficient number, since it is larger than the sum of its proper divisors (1954939353).

65881256167 is a wasteful number, since it uses less digits than its factorization.

65881256167 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3802.

The product of its digits is 4838400, while the sum is 55.

The spelling of 65881256167 in words is "sixty-five billion, eight hundred eighty-one million, two hundred fifty-six thousand, one hundred sixty-seven".