65671100161501 has 8 divisors (see below), whose sum is σ = 69534177581880. Its totient is φ = 61808030688768.

The previous prime is 65671100161411. The next prime is 65671100161531. The reversal of 65671100161501 is 10516100117656.

It can be written as a sum of positive squares in 4 ways, for example, as 48365084159001 + 17306016002500 = 6954501^2 + 4160050^2 .

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

It is not a de Polignac number, because 65671100161501 - 2²⁹ = 65670563290589 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 (65671100161531) 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, 27688495 + ... + 29966563.

It is an arithmetic number, because the mean of its divisors is an integer number (8691772197735).

Almost surely, 2^{65671100161501} is an apocalyptic number.

It is an amenable number.

65671100161501 is a deficient number, since it is larger than the sum of its proper divisors (3863077420379).

65671100161501 is a wasteful number, since it uses less digits than its factorization.

65671100161501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3973823.

The product of its (nonzero) digits is 37800, while the sum is 40.

The spelling of 65671100161501 in words is "sixty-five trillion, six hundred seventy-one billion, one hundred million, one hundred sixty-one thousand, five hundred one".