77071942543 has 16 divisors (see below), whose sum is σ = 82801686240. Its totient is φ = 71479607296.

The previous prime is 77071942517. The next prime is 77071942547. The reversal of 77071942543 is 34524917077.

It is a cyclic number.

It is not a de Polignac number, because 77071942543 - 2¹³ = 77071934351 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77071942547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 478671 + ... + 619087.

It is an arithmetic number, because the mean of its divisors is an integer number (5175105390).

Almost surely, 2^77071942543 is an apocalyptic number.

77071942543 is a deficient number, since it is larger than the sum of its proper divisors (5729743697).

77071942543 is a wasteful number, since it uses less digits than its factorization.

77071942543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140906.

The product of its (nonzero) digits is 1481760, while the sum is 49.

The spelling of 77071942543 in words is "seventy-seven billion, seventy-one million, nine hundred forty-two thousand, five hundred forty-three".