77023755143 has 4 divisors (see below), whose sum is σ = 77067545280. Its totient is φ = 76979965008.

The previous prime is 77023755089. The next prime is 77023755173. The reversal of 77023755143 is 34155732077.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34155732077 = 7723 ⋅4422599.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-77023755143 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 77023755094 and 77023755103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77023755173) 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 3 ways as a sum of consecutive naturals, for example, 21892430 + ... + 21895947.

It is an arithmetic number, because the mean of its divisors is an integer number (19266886320).

Almost surely, 2^77023755143 is an apocalyptic number.

77023755143 is a deficient number, since it is larger than the sum of its proper divisors (43790137).

77023755143 is a wasteful number, since it uses less digits than its factorization.

77023755143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43790136.

The product of its (nonzero) digits is 617400, while the sum is 44.

The spelling of 77023755143 in words is "seventy-seven billion, twenty-three million, seven hundred fifty-five thousand, one hundred forty-three".