65161356142 has 12 divisors (see below), whose sum is σ = 98719389648. Its totient is φ = 32258087000.

The previous prime is 65161356131. The next prime is 65161356173. The reversal of 65161356142 is 24165316156.

It is a happy number.

It is a super-2 number, since 2×65161356142² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 65161356095 and 65161356104.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1576534 + ... + 1617337.

It is an arithmetic number, because the mean of its divisors is an integer number (8226615804).

Almost surely, 2^65161356142 is an apocalyptic number.

65161356142 is a deficient number, since it is larger than the sum of its proper divisors (33558033506).

65161356142 is a wasteful number, since it uses less digits than its factorization.

65161356142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3194075 (or 3193974 counting only the distinct ones).

The product of its digits is 129600, while the sum is 40.

The spelling of 65161356142 in words is "sixty-five billion, one hundred sixty-one million, three hundred fifty-six thousand, one hundred forty-two".