65506072111720 has 64 divisors (see below), whose sum is σ = 155551041792000. Its totient is φ = 24758540598528.

The previous prime is 65506072111717. The next prime is 65506072111723. The reversal of 65506072111720 is 2711127060556.

It is an interprime number because it is at equal distance from previous prime (65506072111717) and next prime (65506072111723).

It is a super-2 number, since 2×65506072111720² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (65506072111723) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 112231375 + ... + 112813534.

It is an arithmetic number, because the mean of its divisors is an integer number (2430485028000).

Almost surely, 2^{65506072111720} is an apocalyptic number.

It is an amenable number.

65506072111720 is an abundant number, since it is smaller than the sum of its proper divisors (90044969680280).

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

65506072111720 is a wasteful number, since it uses less digits than its factorization.

65506072111720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225045322 (or 225045318 counting only the distinct ones).

The product of its (nonzero) digits is 176400, while the sum is 43.

The spelling of 65506072111720 in words is "sixty-five trillion, five hundred six billion, seventy-two million, one hundred eleven thousand, seven hundred twenty".