65070721115 has 8 divisors (see below), whose sum is σ = 79558165008. Its totient is φ = 51074377120.

The previous prime is 65070721099. The next prime is 65070721117. The reversal of 65070721115 is 51112707056.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 65070721115 - 2⁴ = 65070721099 is a prime.

It is a super-2 number, since 2×65070721115² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65070721117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 122774681 + ... + 122775210.

It is an arithmetic number, because the mean of its divisors is an integer number (9944770626).

Almost surely, 2^65070721115 is an apocalyptic number.

65070721115 is a deficient number, since it is larger than the sum of its proper divisors (14487443893).

65070721115 is a wasteful number, since it uses less digits than its factorization.

65070721115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 245549949.

The product of its (nonzero) digits is 14700, while the sum is 35.

The spelling of 65070721115 in words is "sixty-five billion, seventy million, seven hundred twenty-one thousand, one hundred fifteen".