65161065115651 has 64 divisors (see below), whose sum is σ = 72947282227200. Its totient is φ = 57926005632000.

The previous prime is 65161065115639. The next prime is 65161065115709. The reversal of 65161065115651 is 15651156016156.

It is not a de Polignac number, because 65161065115651 - 2¹¹ = 65161065113603 is a prime.

It is a super-2 number, since 2×65161065115651² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 65161065115595 and 65161065115604.

It is not an unprimeable number, because it can be changed into a prime (65161065115631) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3271292070 + ... + 3271311988.

It is an arithmetic number, because the mean of its divisors is an integer number (1139801284800).

Almost surely, 2^{65161065115651} is an apocalyptic number.

65161065115651 is a deficient number, since it is larger than the sum of its proper divisors (7786217111549).

65161065115651 is a wasteful number, since it uses less digits than its factorization.

65161065115651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20740.

The product of its (nonzero) digits is 810000, while the sum is 49.

The spelling of 65161065115651 in words is "sixty-five trillion, one hundred sixty-one billion, sixty-five million, one hundred fifteen thousand, six hundred fifty-one".