77125647843 has 12 divisors (see below), whose sum is σ = 111707270688. Its totient is φ = 51276995280.

The previous prime is 77125647827. The next prime is 77125647869. The reversal of 77125647843 is 34874652177.

77125647843 is a `hidden beast` number, since 7 + 7 + 1 + 2 + 564 + 78 + 4 + 3 = 666.

It is not a de Polignac number, because 77125647843 - 2⁴ = 77125647827 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 77125647843.

It is not an unprimeable number, because it can be changed into a prime (77125647803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11671788 + ... + 11678393.

It is an arithmetic number, because the mean of its divisors is an integer number (9308939224).

Almost surely, 2^77125647843 is an apocalyptic number.

77125647843 is a deficient number, since it is larger than the sum of its proper divisors (34581622845).

77125647843 is a wasteful number, since it uses less digits than its factorization.

77125647843 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23350554 (or 23350551 counting only the distinct ones).

The product of its digits is 7902720, while the sum is 54.

The spelling of 77125647843 in words is "seventy-seven billion, one hundred twenty-five million, six hundred forty-seven thousand, eight hundred forty-three".