65420737171 has 16 divisors (see below), whose sum is σ = 69970146048. Its totient is φ = 61031916000.

The previous prime is 65420737159. The next prime is 65420737211. The reversal of 65420737171 is 17173702456.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 65420737171 - 2⁵ = 65420737139 is a prime.

It is a super-2 number, since 2×65420737171² (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 (65420738171) 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, 54525 + ... + 365806.

It is an arithmetic number, because the mean of its divisors is an integer number (4373134128).

Almost surely, 2^65420737171 is an apocalyptic number.

65420737171 is a deficient number, since it is larger than the sum of its proper divisors (4549408877).

65420737171 is a wasteful number, since it uses less digits than its factorization.

65420737171 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 420522.

The product of its (nonzero) digits is 246960, while the sum is 43.

The spelling of 65420737171 in words is "sixty-five billion, four hundred twenty million, seven hundred thirty-seven thousand, one hundred seventy-one".