77145780824343 has 24 divisors (see below), whose sum is σ = 138929198368896. Its totient is φ = 40075730298000.

The previous prime is 77145780824339. The next prime is 77145780824353. The reversal of 77145780824343 is 34342808754177.

77145780824343 is a `hidden beast` number, since 7 + 7 + 1 + 4 + 578 + 0 + 8 + 24 + 34 + 3 = 666.

It is not a de Polignac number, because 77145780824343 - 2² = 77145780824339 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77145780824353) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 55660735833 + ... + 55660737218.

It is an arithmetic number, because the mean of its divisors is an integer number (5788716598704).

Almost surely, 2^{77145780824343} is an apocalyptic number.

77145780824343 is a deficient number, since it is larger than the sum of its proper divisors (61783417544553).

77145780824343 is a wasteful number, since it uses less digits than its factorization.

77145780824343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111321473075 (or 111321473072 counting only the distinct ones).

The product of its (nonzero) digits is 126443520, while the sum is 63.

The spelling of 77145780824343 in words is "seventy-seven trillion, one hundred forty-five billion, seven hundred eighty million, eight hundred twenty-four thousand, three hundred forty-three".