77055426894 has 16 divisors (see below), whose sum is σ = 159425021520. Its totient is φ = 24799447680.

The previous prime is 77055426817. The next prime is 77055426901. The reversal of 77055426894 is 49862455077.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 221423467 + ... + 221423814.

It is an arithmetic number, because the mean of its divisors is an integer number (9964063845).

Almost surely, 2^77055426894 is an apocalyptic number.

77055426894 is an abundant number, since it is smaller than the sum of its proper divisors (82369594626).

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

77055426894 is a wasteful number, since it uses less digits than its factorization.

77055426894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 442847315.

The product of its (nonzero) digits is 16934400, while the sum is 57.

The spelling of 77055426894 in words is "seventy-seven billion, fifty-five million, four hundred twenty-six thousand, eight hundred ninety-four".