65161001605 has 16 divisors (see below), whose sum is σ = 89396536320. Its totient is φ = 44665391232.

The previous prime is 65161001597. The next prime is 65161001617. The reversal of 65161001605 is 50610016156.

It is not a de Polignac number, because 65161001605 - 2³ = 65161001597 is a prime.

It is a super-2 number, since 2×65161001605² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 245589 + ... + 436618.

It is an arithmetic number, because the mean of its divisors is an integer number (5587283520).

Almost surely, 2^65161001605 is an apocalyptic number.

It is an amenable number.

65161001605 is a deficient number, since it is larger than the sum of its proper divisors (24235534715).

65161001605 is a wasteful number, since it uses less digits than its factorization.

65161001605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 684948.

The product of its (nonzero) digits is 5400, while the sum is 31.

The spelling of 65161001605 in words is "sixty-five billion, one hundred sixty-one million, one thousand, six hundred five".