77071082243 has 4 divisors (see below), whose sum is σ = 77076478248. Its totient is φ = 77065686240.

The previous prime is 77071082219. The next prime is 77071082273. The reversal of 77071082243 is 34228017077.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34228017077 = 19 ⋅1801474583.

It is a cyclic number.

It is not a de Polignac number, because 77071082243 - 2¹⁴ = 77071065859 is a prime.

It is a super-2 number, since 2×77071082243² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 77071082243.

It is not an unprimeable number, because it can be changed into a prime (77071082273) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2676521 + ... + 2705162.

It is an arithmetic number, because the mean of its divisors is an integer number (19269119562).

Almost surely, 2^77071082243 is an apocalyptic number.

77071082243 is a deficient number, since it is larger than the sum of its proper divisors (5396005).

77071082243 is a wasteful number, since it uses less digits than its factorization.

77071082243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5396004.

The product of its (nonzero) digits is 131712, while the sum is 41.

The spelling of 77071082243 in words is "seventy-seven billion, seventy-one million, eighty-two thousand, two hundred forty-three".