65405076771 has 8 divisors (see below), whose sum is σ = 89234833600. Its totient is φ = 42589352232.

The previous prime is 65405076739. The next prime is 65405076799. The reversal of 65405076771 is 17767050456.

65405076771 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 65405076771 - 2⁵ = 65405076739 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 65405076771.

It is not an unprimeable number, because it can be changed into a prime (65405076731) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 253507921 + ... + 253508178.

It is an arithmetic number, because the mean of its divisors is an integer number (11154354200).

Almost surely, 2^65405076771 is an apocalyptic number.

65405076771 is a deficient number, since it is larger than the sum of its proper divisors (23829756829).

65405076771 is a wasteful number, since it uses less digits than its factorization.

65405076771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 507016145.

The product of its (nonzero) digits is 1234800, while the sum is 48.

The spelling of 65405076771 in words is "sixty-five billion, four hundred five million, seventy-six thousand, seven hundred seventy-one".