77425532754561 has 16 divisors (see below), whose sum is σ = 114704685529920. Its totient is φ = 51616935184320.

The previous prime is 77425532754473. The next prime is 77425532754569. The reversal of 77425532754561 is 16545723552477.

77425532754561 is a `hidden beast` number, since 7 + 7 + 4 + 2 + 5 + 5 + 3 + 27 + 545 + 61 = 666.

It is not a de Polignac number, because 77425532754561 - 2³⁰ = 77424459012737 is a prime.

It is not an unprimeable number, because it can be changed into a prime (77425532754569) 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, 16744906 + ... + 20862476.

It is an arithmetic number, because the mean of its divisors is an integer number (7169042845620).

Almost surely, 2^{77425532754561} is an apocalyptic number.

It is an amenable number.

77425532754561 is a deficient number, since it is larger than the sum of its proper divisors (37279152775359).

77425532754561 is a wasteful number, since it uses less digits than its factorization.

77425532754561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4814013 (or 4814007 counting only the distinct ones).

The product of its digits is 246960000, while the sum is 63.

The spelling of 77425532754561 in words is "seventy-seven trillion, four hundred twenty-five billion, five hundred thirty-two million, seven hundred fifty-four thousand, five hundred sixty-one".