65161297420 has 24 divisors (see below), whose sum is σ = 136988970048. Its totient is φ = 26035900800.

The previous prime is 65161297393. The next prime is 65161297429. The reversal of 65161297420 is 2479216156.

It is not an unprimeable number, because it can be changed into a prime (65161297429) 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, 1769961 + ... + 1806400.

It is an arithmetic number, because the mean of its divisors is an integer number (5707873752).

Almost surely, 2^65161297420 is an apocalyptic number.

It is an amenable number.

65161297420 is an abundant number, since it is smaller than the sum of its proper divisors (71827672628).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

65161297420 is a wasteful number, since it uses less digits than its factorization.

65161297420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3577281 (or 3577279 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 43.

The spelling of 65161297420 in words is "sixty-five billion, one hundred sixty-one million, two hundred ninety-seven thousand, four hundred twenty".