77125041278 has 32 divisors (see below), whose sum is σ = 126746415360. Its totient is φ = 35034370560.

The previous prime is 77125041271. The next prime is 77125041311. The reversal of 77125041278 is 87214052177.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77125041271) 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, 6561875 + ... + 6573617.

It is an arithmetic number, because the mean of its divisors is an integer number (3960825480).

Almost surely, 2^77125041278 is an apocalyptic number.

77125041278 is a deficient number, since it is larger than the sum of its proper divisors (49621374082).

77125041278 is a wasteful number, since it uses less digits than its factorization.

77125041278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18452.

The product of its (nonzero) digits is 219520, while the sum is 44.

The spelling of 77125041278 in words is "seventy-seven billion, one hundred twenty-five million, forty-one thousand, two hundred seventy-eight".