65115720716 has 24 divisors (see below), whose sum is σ = 119002380000. Its totient is φ = 31117312512.

The previous prime is 65115720713. The next prime is 65115720727. The reversal of 65115720716 is 61702751156.

It is a super-2 number, since 2×65115720716² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (65115720713) 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, 168431 + ... + 398246.

It is an arithmetic number, because the mean of its divisors is an integer number (4958432500).

Almost surely, 2^65115720716 is an apocalyptic number.

It is an amenable number.

65115720716 is a deficient number, since it is larger than the sum of its proper divisors (53886659284).

65115720716 is a wasteful number, since it uses less digits than its factorization.

65115720716 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 567953 (or 567951 counting only the distinct ones).

The product of its (nonzero) digits is 88200, while the sum is 41.

The spelling of 65115720716 in words is "sixty-five billion, one hundred fifteen million, seven hundred twenty thousand, seven hundred sixteen".