65077844577138 has 32 divisors (see below), whose sum is σ = 147346063200000. Its totient is φ = 21283320238128.

The previous prime is 65077844577133. The next prime is 65077844577143. The reversal of 65077844577138 is 83177544877056.

65077844577138 is a `hidden beast` number, since 6 + 5 + 0 + 7 + 7 + 8 + 44 + 577 + 1 + 3 + 8 = 666.

It is an interprime number because it is at equal distance from previous prime (65077844577133) and next prime (65077844577143).

It is a super-2 number, since 2×65077844577138² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (65077844577133) 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, 11369292138 + ... + 11369297861.

It is an arithmetic number, because the mean of its divisors is an integer number (4604564475000).

Almost surely, 2^{65077844577138} is an apocalyptic number.

65077844577138 is an abundant number, since it is smaller than the sum of its proper divisors (82268218622862).

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

65077844577138 is a wasteful number, since it uses less digits than its factorization.

65077844577138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22738590063 (or 22738590057 counting only the distinct ones).

The product of its (nonzero) digits is 1106380800, while the sum is 72.

The spelling of 65077844577138 in words is "sixty-five trillion, seventy-seven billion, eight hundred forty-four million, five hundred seventy-seven thousand, one hundred thirty-eight".