77369521126 has 4 divisors (see below), whose sum is σ = 116054281692. Its totient is φ = 38684760562.

The previous prime is 77369521123. The next prime is 77369521171. The reversal of 77369521126 is 62112596377.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 77369521126.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77369521123) by changing a digit.

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 as a sum of consecutive naturals, namely, 19342380280 + ... + 19342380283.

It is an arithmetic number, because the mean of its divisors is an integer number (29013570423).

Almost surely, 2^77369521126 is an apocalyptic number.

77369521126 is a deficient number, since it is larger than the sum of its proper divisors (38684760566).

77369521126 is a wasteful number, since it uses less digits than its factorization.

77369521126 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38684760565.

The product of its digits is 952560, while the sum is 49.

The spelling of 77369521126 in words is "seventy-seven billion, three hundred sixty-nine million, five hundred twenty-one thousand, one hundred twenty-six".