77732346821066 has 32 divisors (see below), whose sum is σ = 134512775442432. Its totient is φ = 32999587291440.

The previous prime is 77732346821011. The next prime is 77732346821069. The reversal of 77732346821066 is 66012864323777.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (77732346821069) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14609231 + ... + 19206621.

It is an arithmetic number, because the mean of its divisors is an integer number (4203524232576).

Almost surely, 2^{77732346821066} is an apocalyptic number.

77732346821066 is a deficient number, since it is larger than the sum of its proper divisors (56780428621366).

77732346821066 is a wasteful number, since it uses less digits than its factorization.

77732346821066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4608794.

The product of its (nonzero) digits is 85349376, while the sum is 62.

The spelling of 77732346821066 in words is "seventy-seven trillion, seven hundred thirty-two billion, three hundred forty-six million, eight hundred twenty-one thousand, sixty-six".